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: Although Bin Laden, Atef, and KSM initially contemplated using established al Qaeda members to execute the planes operation, the late 1999 arrival in Kandahar of four aspiring jihadists from Germany suddenly presented a more attractive alternative.
Sent 2: The Hamburg group shared the anti-U.S. fervor of the other candidates for the operation, but added the enormous advantages of fluency in English and familiarity with life in the West, based on years that each member of the group had spent living in Germany.
Sent 3: Not surprisingly, Mohamed Atta, Ramzi Binalshibh, Marwan al Shehhi, and Ziad Jarrah would all become key players in the 9/11 conspiracy.
Sent 4: Mohamed Atta was born on September 1, 1968, in Kafr el Sheikh, Egypt, to a middle-class family headed by his father, an attorney.
Sent 5: After graduating from Cairo University with a degree in architectural engineering in 1990, Atta worked as an urban planner in Cairo for a couple of years.
Sent 6: In the fall of 1991, he asked a German family he had met in Cairo to help him continue his education in Germany.
Sent 7: They suggested he come to Hamburg and invited him to live with them there, at least initially.
Sent 8: After completing a course in German, Atta traveled to Germany for the first time in July 1992.
Sent 9: He resided briefly in Stuttgart and then, in the fall of 1992, moved to Hamburg to live with his host family.
Sent 10: After enrolling at the University of Hamburg, he promptly transferred into the city engineering and planning course at the Technical University of Hamburg-Harburg, where he would remain registered as a student until the fall of 1999.
Sent 11: He appears to have applied himself fairly seriously to his studies (at least in comparison to his jihadist friends) and actually received his degree shortly before traveling to Afghanistan.
Sent 12: In school, Atta came across as very intelligent and reasonably pleasant, with an excellent command of the German language.
Sent 13: When Atta arrived in Germany, he appeared religious, but not fanatically so.
Sent 14: This would change, especially as his tendency to assert leadership became increasingly pronounced.
Sent 15: According to Binalshibh, as early as 1995 Atta sought to organize a Muslim student association in Hamburg.
Sent 16: In the fall of 1997, he joined a working group at the Quds mosque in Hamburg, a group designed to bridge the gap between Muslims and Christians.
Sent 17: Atta proved a poor bridge, however, because of his abrasive and increasingly dogmatic personality.
Sent 18: But among those who shared his beliefs, Atta stood out as a decisionmaker.
Question: Who was a student at Technical University of Hamburg-Harburg until 1999? (A) Mohamed Atta (B) Marwan al Shehhi (C) Atta (D) Ziad Jarrah (E) Ramzi Binalshibh.

Output: A, C.

Input: Consider Input: Paragraph- Sent 1: Living things need non-living matter as well as energy.
Sent 2: What do you think matter is used for?
Sent 3: One thing is to build bodies.
Sent 4: They also need it to carry out the processes of life.
Sent 5: Any non-living matter that living things need is called a nutrient.
Sent 6: Carbon and nitrogen are examples of nutrients.
Sent 7: Unlike energy, matter is recycled in ecosystems.
Sent 8: You can see how in Figure 3.11.
Sent 9: Decomposers release nutrients when they break down dead organisms.
Sent 10: The nutrients are taken up by plants through their roots.
Sent 11: The nutrients pass to primary consumers when they eat the plants.
Sent 12: The nutrients pass to higher level consumers when they eat lower level consumers.
Sent 13: When living things die, the cycle repeats.
Question: Name living or nonliving things that uses energy (A) Plants (B) Space (C) Matter (D) Animals (E) Rocks.

Output: A, C, D.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- Declaring 2010 "The best year in safety performance in our company's history," Transocean Ltd., owner of the Gulf of Mexico oil rig that exploded, killing 11 workers, has awarded its top executives hefty bonuses and raises, according to a recent filing with the U.S. Securities and Exchange Commission.
Sent 2: That includes a $200,000 salary increase for Transocean president and chief executive officer Steven L. Newman, whose base salary will increase from $900,000 to $1.1 million, according to the SEC report.
Sent 3: Newman's bonus was $374,062, the report states.
Sent 4: Newman also has a $5.4 million long-term compensation package the company awarded him upon his appointment as CEO in March 2010, according to the SEC filing.
Sent 5: The latest cash awards are based in part on the company's "performance under safety," the Transocean filing states.
Sent 6: "Notwithstanding the tragic loss of life in the Gulf of Mexico, we achieved an exemplary statistical safety record as measured by our total recordable incident rate and total potential severity rate," the SEC statement reads.
Sent 7: "As measured by these standards, we recorded the best year in safety performance in our Company's history."Sent 8: The company called that record "a reflection on our commitment to achieving an incident-free environment, all the time, everywhere," the SEC filing states.
Sent 9: The company did not respond to an e-mail from CNN seeking comment.
Sent 10: The April 20, 2010, explosion on the Deepwater Horizon rig injured 17 workers and killed 11 others, including nine Transocean employees, according to the SEC filing.
Sent 11: It has been called the worst spill in U.S. history.
Sent 12: The well was capped three months later, but not before millions of barrels of oil spilled into the Gulf.
Sent 13: In January, President Barack Obama's National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling released a report that spread blame for the accident among Transocean, BP -- which leased the rig -- and Halliburton, which installed the rig's cement casing.
Question: What was the worst oil spill in U.S. history? (A) The April 20, 2010 spill (B) Horizon (C) The 2010 Deepwater Horizon rig explosion at the Gulf of Mexico (D) The Deepwater Horizon oil spill (E) Transocean rig in 2009 (F) Deep Horizon rig explosion in 2009 (G) Deepwater Horizon rig (H) Explosion rig (I) Deepwater Horizon explosion.
Output: A, C, D, G, I.