Given the task definition, example input & output, solve the new input case.
In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Example: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lôduring July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Links: a. Allies of World War II b. Wesel c. Operation Market Garden d. Air Support.
Output: c
The passage describes the 704th's actions during Operation Market Garden.

New input case for you: Question: Between the city where Mandy was born and the one where he went to school on scholarship, which one has more natural water formations? Passage:Norman Stewart Mitchell-Innes was born in Calcutta on 7 September 1914, where his father was a businessman of Scottish descent. Both his father, also named Norman, and his grandfather, Gilbert, were keen golfers. The former was the All India Amateur Golf Champion in 1893 and 1894, while the latter captained Prestwick Golf Club. He moved to England with his family at the age of five to live in Minehead, Somerset, and gained a scholarship to Sedbergh School based in Cumbria. At Sedbergh he developed quickly as a cricketer, first playing for the school's first team aged 15. The subsequent year, he scored 302 not out in a house match in one afternoon. In the summer of 1931, after scoring two half-centuries for Sedbergh against Durham School and Stonyhurst College, Mitchell-Innes was called up to play for Somerset County Cricket Club in a County Championship match against Warwickshire. He had to travel down from Scotland by overnight train for the fixture at the County Ground, Taunton. He took two wickets, and scored 23 runs in the match, which was drawn.
 Links: a. County Championship b. Kolkata c. County Championship d. Warwickshire County Cricket Club
Output:
b