TASK DEFINITION: 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.
PROBLEM: Paragraph- Sent 1: Tuesday, September 11, 2001, dawned temperate and nearly cloudless in the eastern United States.
Sent 2: Millions of men and women readied themselves for work.
Sent 3: Some made their way to the Twin Towers, the signature structures of the World Trade Center complex in New York City.
Sent 4: Others went to Arlington, Virginia, to the Pentagon.
Sent 5: Across the Potomac River, the United States Congress was back in session.
Sent 6: At the other end of Pennsylvania Avenue, people began to line up for a White House tour.
Sent 7: In Sarasota, Florida, President George W. Bush went for an early morning run.
Sent 8: For those heading to an airport, weather conditions could not have been better for a safe and pleasant journey.
Sent 9: Among the travelers were Mohamed Atta and Abdul Aziz al Omari, who arrived at the airport in Portland, Maine.
Sent 10: Boston: American 11 and United 175.
Sent 11: Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport.
Sent 12: When he checked in for his flight to Boston, Atta was selected by a computerized prescreening system known as CAPPS (Computer Assisted Passenger Prescreening System), created to identify passengers who should be subject to special security measures.
Sent 13: Under security rules in place at the time, the only consequence of Atta's selection by CAPPS was that his checked bags were held off the plane until it was confirmed that he had boarded the aircraft.
Sent 14: This did not hinder Atta's plans.
Sent 15: Atta and Omari arrived in Boston at 6:45.
Sent 16: Seven minutes later, Atta apparently took a call from Marwan al Shehhi, a longtime colleague who was at another terminal at Logan Airport.
Sent 17: They spoke for three minutes.
Sent 18: It would be their final conversation.
Question: Where did Atta and Oari travel from, and where did they travel to? (A) Boston to Florida (B) Boston, Prtland (C) Portland, Boston (D) Maine to Boston (E) Portland, Maine where they traveled to Boston (F) Boston to Portland, Maine (G) Boston to Virginia (H) Virginia to Boston (I) Portland, Maine to Boston (J) Florida to Boston.

SOLUTION: C, D, E, I.

PROBLEM: Paragraph- Sent 1: Joey got a German Shepherd for his birthday present.
Sent 2: He had never had any pets before, but was always excited to see the other dogs and cats in his neighborhood.
Sent 3: Since his birthday was in June, he spent a lot of time playing outside with his new puppy, which he named Max.
Sent 4: Max and Joey would often run through fields in a game of chase.
Sent 5: They also liked to go through the small forest behind the house, making a game of hide and seek.
Sent 6: They never went near the lake because Joey was afraid of water.
Sent 7: One day, Max hid a little too well and Joey couldn't find him.
Sent 8: Joey spent the afternoon looking for his German Shepherd where they often played, like the field and forest.
Sent 9: Joey was a shy boy who often read by himself, and Max was his best friend.
Sent 10: After dinner, he went to look for Max one last time before he had to take a bath and go to bed.
Sent 11: He heard some barking on the next street, so he ran to see if it was his puppy.
Sent 12: Sure enough, he saw Max playing with a poodle.
Sent 13: The dogs were having so much fun.
Sent 14: Joey brought Max home, happy that he had his puppy back.
Sent 15: Max seemed to be happy to have his human by his side as well as a new doggy friend.
Sent 16: All summer long, Joey took Max to the poodle's house so they could play without having to worry about losing his present.
Question: What were the times of day that Joey looked for Max? (A) Afternoon and after dinner (B) In the morning after breakfast (C) In the afteroon and after dinner.

SOLUTION: A, C.

PROBLEM: Paragraph- Sent 1: The idea that Earth is a magnet is far from new.
Sent 2: It was first proposed in 1600 by a British physician named William Gilbert.
Sent 3: Knowing it acts like a magnet is one thing.
Sent 4: Knowing why it acts like a magnet is more difficult.
Sent 5: In fact, finding out why is a fairly recent discovery.
Sent 6: To find out why required new technology.
Sent 7: It was the seismograph that made it possible to learn why the Earth acted like a magnet.
Sent 8: Seismograph are used to study earthquakes.
Sent 9: By studying earthquake waves they were able to learn about Earths interior.
Sent 10: They discovered that Earth has an inner and outer core.
Sent 11: The outer core consists of liquid metals, mainly iron and nickel.
Sent 12: Scientists think that Earths magnetic field is generated here.
Sent 13: It is caused by the motion of this liquid metal.
Sent 14: The liquid metal moves as Earth spins on its axis.
Question: How does the liquid metal within the Earth's core generate a magnetic field? (A) It is caused by the motion of this liquid metal (B) By nuclear reacations (C) They discovered that Earth has an inner and outer core (D) The liquid metal in the outer core moves as the Earth spins generating a magnetic field (E) It moves.

SOLUTION:
A, D, E.