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.

Input: Consider Input: Paragraph- Sent 1: Albert Bandura OC (/baen'dU@r@/; born December 4, 1925) is a psychologist who is the David Starr Jordan Professor Emeritus of Social Science in Psychology at Stanford University.
Sent 2: For almost six decades, he has been responsible for contributions to the field of education and to many fields of psychology, including social cognitive theory, therapy and personality psychology, and was also influential in the transition between behaviorism and cognitive psychology.
Sent 3: He is known as the originator of social learning theory and the theoretical construct of self-efficacy, and is also responsible for the influential 1961 Bobo doll experiment.
Sent 4: Social learning theory is how people learn through observing others.
Sent 5: An example of social learning theory would be the students imitating the teacher.
Sent 6: Self-efficacy is "The belief in one's capabilities to organize and execute the courses of action required to manage prospective situations."Sent 7: To paraphrase, self-efficiacy is believing in yourself to take action.
Sent 8: The Bobo Doll Experiment was how Albert Bandura studied aggression and non-aggression in children.
Sent 9: A 2002 survey ranked Bandura as the fourth most-frequently cited psychologist of all time, behind B. F. Skinner, Sigmund Freud, and Jean Piaget, and as the most cited living one.
Sent 10: Bandura is widely described as the greatest living psychologist, and as one of the most influential psychologists of all time.
Sent 11: In 1974 Bandura was elected to be the Eighty-Second President of the American Psychological Association (APA).
Sent 12: He was one of the youngest president-elects in the history of the APA at the age of 48.
Sent 13: Bandura served as a member of the APA Board of Scientific Affairs from 1968 to 1970 and is well known as a member of the editorial board of nine psychology journals including the Journal of Personality and Social Psychology from 1963 to 1972.
Sent 14: At the age of 82, Bandura was awarded the Grawemeyer Award for psychology.
Question: What year did Albert Bandura study aggression and non-aggression in children? (A) 1974 (B) 1961 (C) 2002.

Output: B.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- Argentina's star-studded line-up began their World Cup campaign with a 1-0 victory over Nigeria in their Group B opener in Johannesburg on Saturday.
Sent 2: A goal from defender Gabriel Heinze after six minutes was all that separated the two teams after an inspired display from Nigeria goalkeeper Vincent Enyeama.
Sent 3: But South Korea ended the day on top of the group following a 2-0 victory over Greece in Port Elizabeth earlier on Saturday.
Sent 4: Goals from Lee Jung-Soo and Park Ji-Sung gave the 2002 semifinalists a comfortable win over the 2008 European cvhampions.
Sent 5: Argentina 1-0 Nigeria Enyeama could do little to stop Heinze's powerful early header from a Juan Sebastian Veron corner, but he kept his team alive with a string of acrobatic saves to deny World Player of the Year Lionel Messi.
Sent 6: Diego Maradona was delighted to secure his first victory as a World Cup coach, but critical of his strikers for failing to make the game safe.
Sent 7: "When you don't kill things off in front of goal you can pay a heavy price.
Sent 8: They almost got a draw -- we missed loads of chances," Maradona told AFP.
Sent 9: "Players such as Leo Messi and Higuain knocked in around 60 goals last season between them, yet today it was almost as if they couldn't set their sights on goal.
Sent 10: "But the win means we can be calm -- we are in the right track.".
Question: Who were the 2008 European champions? (A) Argentina (B) South Korea (C) Germany (D) Greece.

Output: D.

Input: Consider Input: Paragraph- Sent 1: When land is cleared, habitats are lost.
Sent 2: It may be cleared for agriculture.
Sent 3: It may also be used for building new homes or businesses.
Sent 4: Within the past 100 years, the amount of land used for agriculture has almost doubled.
Sent 5: Land used for grazing cattle has more than doubled.
Sent 6: Many wetlands have also been lost to agriculture.
Sent 7: The U.S. has lost almost all the natural tall-grass prairies.
Sent 8: Thee areas of tall thick grass have virtually disappeared.
Sent 9: These areas of land had thick fertile soil.
Sent 10: Their grasses had very deep root systems.
Sent 11: These deep and thick roots reduced the amount of soil erosion.
Sent 12: They also were home to many plants and animals.
Sent 13: Prairies were wonderful places.
Sent 14: They were home to colorful flowers, prairie dogs, and herds of bison.
Question: What types of land have been lost to agriculture? (A) Prairies (B) Wet lands, and prairies (C) Wetlands (D) Grass lands (E) Home (F) Flat lands (G) Land intended for cities (H) Many wetlands have also been lost to agriculture.
Output: A, B, C, D, H.