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.

Ex Input:
Paragraph- Sent 1: Fossils give clues about major geological events.
Sent 2: Fossils can also give clues about past climates.
Sent 3: Fossils of ocean animals on the top of a mountain?
Sent 4: Ocean animals have been found on the Earths tallest mountain.
Sent 5: Its hard to believe, but it is true.
Sent 6: These fossils were found at the top of Mt. Everest.
Sent 7: Mt. Everest is the highest mountain on Earth.
Sent 8: These fossils showed that this entire area was once at the bottom of a sea.
Sent 9: It can only mean that Mt. Everest was uplifted.
Sent 10: In fact, the entire Himalaya mountain range was raised.
Sent 11: It was forced up from the collision of two continents.
Sent 12: Fossils of plants are found in Antarctica.
Sent 13: Now, Antarctica is almost completely covered with ice.
Sent 14: Plants do not grow in Antarctica.
Sent 15: According to fossils, they once did.
Sent 16: This means that Antarctica was once much warmer than it is now.
Sent 17: These fossils tell us about Antarcticas past climate.
Question: Which mountain range has the Earth's highest mountain? (A) Rockies (B) Andes (C) The Himalayas (Mt. Everest is the highest mountain on Earth, and it is located in the Himalayas.) (D) Ural Mountains (E) The Himalayans (F) Himalayan Mountains (G) The Himalaya mountain range (H) Mount Everest (I) Swiss Alps (J) Antartica.

Ex Output:
C, E, F, G.

Ex Input:
Paragraph- Sent 1: Imagine you are standing in a farm field in central Illinois.
Sent 2: The land is so flat you can see for miles and miles.
Sent 3: On a clear day, you might see a grain silo 20 miles away.
Sent 4: You might think to yourself, it sure is flat around here.
Sent 5: If you drive one hundred miles to the south, the landscape changes.
Sent 6: In southern Illinois, there are rolling hills.
Sent 7: Why do you think this is?
Sent 8: What could have caused these features?
Sent 9: There are no big rivers that may have eroded and deposited this material.
Sent 10: The ground is capable of supporting grass and trees, so wind erosion would not explain it.
Sent 11: To answer the question, you need to go back 12,000 years.
Sent 12: Around 12,000 years ago, a giant ice sheet covered much of the Midwest United States.
Sent 13: Springfield, Illinois, was covered by over a mile of ice.
Sent 14: Its hard to imagine a mile thick sheet of ice.
Sent 15: The massive ice sheet, called a glacier, caused the features on the land you see today.
Sent 16: Where did glaciers go?
Sent 17: Where can you see them today?
Sent 18: Glaciers are masses of flowing ice.
Question: What features did the glaciers cause in Illinois? (A) A mile of ice (B) Rolling hills (C) Hills (D) Plateaus (E) Caves (F) Capable of supporting grass and trees (G) Flat land (H) Mountains.

Ex Output:
B, C, G.

Ex Input:
Paragraph- Sent 1: Jake was walking to the park to play baseball with his friends.
Sent 2: He loved being outside on sunny days, and now that school was over for the year, he was playing baseball every day.
Sent 3: The more he played, the better he got.
Sent 4: Only Frank was better than he was.
Sent 5: He liked playing third base, but he often played in the field.
Sent 6: He was carrying his favorite mitt that his Grandfather had bought him.
Sent 7: His Grandfather had taught him to catch.
Sent 8: He loved spending time with him when he was younger, but he had moved last year.
Sent 9: Now he only saw his Grandfather in the summer.
Sent 10: Jake was really excited to show him his skills when he came to their next game.
Sent 11: He could throw really fast now.
Sent 12: He was sure his Grandfather would want to sit in the front to watch him.
Sent 13: He knew he would jump up and down.
Sent 14: Jake happily ran the rest of the way to the park thinking about how much fun he was going to have playing baseball this year.
Question: Why does Jake only see his grandfather in the summer now? (A) Grandfather is on job (B) He had moved last year (C) Moved.

Ex Output:
B, C.