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: Washington The Iraqi government has agreed to let U.S. Rep. Tony Hall visit the country next week to assess a humanitarian crisis that has festered since the Gulf War of 1990, Hall's office said Monday.
Sent 2: The Dayton Democrat, who has traveled to other crisis points including Sierra Leone and North Korea, will spend three days visiting hospitals and other facilities to seek understanding why aid has been ineffective in stemming malnourishment and other medical problems.
Sent 3: Iraq has been under economic sanctions since the war ended, which some say have thwarted the country's ability to recover from the devastation of the bombing campaign.
Sent 4: The Persian Gulf War destroyed much of the country's medical infrastructure, according to a report by the World Health Organization.
Sent 5: In 1996 the WHO found that much of the population existed in a state of ``semi-starvation.''Sent 6: Hall will be only the second member of Congress to travel in Iraq since the war, according to Hall's office.
Sent 7: The last visitor was then-U.S. Rep. Bill Richardson of New Mexico, who went to help a pair of U.S. oilmen in diplomatic trouble.
Sent 8: Hall flies to Amman, Jordan, on Friday, where he'll spend the night before driving to Iraq.
Sent 9: Flights are not permitted into Iraq.
Sent 10: Hall is to return to Washington on April 22.
Sent 11: Story Filed By Cox Newspapers. 
Question: Why is Hall flying to Amman? (A) To take another flight directly to Iraq (B) To go back to Washington (C) He'll spend the night there before driving to Iraq (D) Flights are not permitted into Iraq (E) There are no flights into Iraq (F) He'll spend the night in Amman before driving to Iraq because flights are not permitted into Iraq (G) To spend the night there.

Solution: C, D, E, F.