You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.
Example: Paragraph- Sent 1: Obama was born on August 4, 1961, at Kapiʻolani Maternity & Gynecological Hospital in Honolulu, Hawaii.
Sent 2: He is the only President to have been born in Hawaii.
Sent 3: He was born to a white mother and a black father.
Sent 4: His mother, Ann Dunham (1942-1995), was born in Wichita, Kansas, of mostly English descent, with some German, Irish, Scottish, Swiss, and Welsh ancestry. Question: How old was Obama's mother when he was born? (A) teenager (B) in his 40s (C) mid 20s (D) almost twenty.
Example solution: D.
Example explanation: Obama was born in 1961. His mother was born in 1942 and 1961-1942=19. Therefore, "almost twenty" answers the question sufficiently.

Problem: Paragraph- Sent 1: Have you ever looked closely at a globe?
Sent 2: That continents look like a giant jig-saw puzzle.
Sent 3: North America looks like it could fit next to Europe.
Sent 4: The edge of South America matches Africa.
Sent 5: Scientists noticed these same features.
Sent 6: It caused them to start asking questions.
Sent 7: They wanted to know if these continents were was connected?
Sent 8: If so, how can something so large move so far?
Sent 9: What could possibly have enough force to move such a giant slab of rock?
Sent 10: Is there other evidence that can provide clues to the past positions of continents?
Sent 11: How can answering these questions help us?
Sent 12: A scientist named Alfred Wegener had these same questions.
Sent 13: Wegener look at rocks on both sides of the Atlantic Ocean.
Sent 14: He noticed they were the same type and age.
Sent 15: He thought that the rocks must have formed side by side.
Sent 16: He proposed that the rocks then drifted apart.
Sent 17: One part went with North America.
Sent 18: The other part stayed with Europe. 
Question: What features did the scientists notice (A) Edges of South America matching with Africa (B) That the continents look like a giant jig-saw puzzle (C) Giant slab of work (D) North America next to Europe (E) The continents were the same size (F) North America looks like it could fit next to Europe. The edge of South America matches Africa (G) Fitting of rocks (H) Edges of the continents seem to fit together.

Solution: A, B, D, F, H.