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 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 are Argentina's strikers? (A) Lee Jung-Soo (B) Juan Sebastian Veron (C) Gabriel Heinze (D) Lionel Messi & Higuain.
Example Output: C.

Example Input: Paragraph- Sent 1: To protect its seagoing interests and trade routes, Portugal established strategic garrisons in Goa (India), Malacca (East Indies), and Hormuz in the Persian Gulf.
Sent 2: Portuguese explorers then embarked upon Macau (now Macao), the Congo, and various other parts of Africa, including the Sudan.
Sent 3: The Portuguese policy was to avoid armed strife and to develop a trade empire, rather than to conquer nations.
Sent 4: To this end it succeeded with relatively few blood-soaked episodes in its colonial history.
Sent 5: Adventures abroad, however, proved disastrous during the second half of the 16th century.
Sent 6: In 1557 the 14-year-old boy-king Sebastiao ascended the throne, the beginning of a calamitous reign that was to end at the battle of Alcacer-Quiber (Morocco) in pursuit of a vain crusade.
Sent 7: Sebastiao's untimely demise, alongside some 18,000 ill-prepared, badly led followers, set the stage for a crisis of succession.
Sent 8: For many years afterwards, legends and rumors bizarrely insisted that the king was still alive, and imposters turned up from time to time claiming the throne; those who were plausible enough to be deemed a threat were summarily executed.
Sent 9: In fact, the only rightful claimant to the crown was the elderly Prince Henry.
Sent 10: But after two years of alternating between the throne and his sickbed, he died, heirless.
Sent 11: Surveying the situation and smelling an opportunity, Spain occupied the power vacuum, and Portugal's neighbor and long-time antagonist became its master.
Sent 12: Spanish rule dictated Portugal's inadvertent involvement in Spain's ongoing wars.
Sent 13: In 1587 a squadron of British ships commanded by Francis Drake attacked the Algarve (now a "legitimate target" as Spanish territory) and sacked Sagres, thus depriving the world of the relics of Henry the Navigator.
Sent 14: Nine years later Faro was torched.
Sent 15: The 1386 Treaty of Windsor, by which Britain and Portugal had pledged eternal friendship, seemed a distant memory.
Sent 16: Portugal's empire was gradually eroded, and many of its trading posts (with the notable exception of Brazil) were picked off by the British and Dutch.
Sent 17: Finally, after 60 years of Spanish rule, Portuguese noblemen (aided by the French, then at war with Spain) organized a palace coup and restored independence.
Sent 18: The Great Disaster Portugal's greatest misfortune struck on All Saint's Day, 1 November 1755.
Question: What happened to Prince Henry? (A) HE had a baby (B) He was the only rightful claimant to the throne, but he died after two years of alternating between the throne and his sickbed (C) He was the greatest ruler (D) He died (E) He died at the throne (F) He ruled for a full term.
Example Output: B, D, E.

Example Input: Paragraph- Sent 1: You have seen your own reflection in a mirror.
Sent 2: The person looking back at you looks just like you.
Sent 3: Where does that reflected person appear to be standing?
Sent 4: Yes, they appear to be on the other side of the mirror.
Sent 5: That is really strange to think about, but very cool.
Sent 6: Have you ever waved at your reflection in a mirror?
Sent 7: The reflected image will wave back at you.
Sent 8: Here is something to try next time you stand in front of a mirror.
Sent 9: Wave to your reflection with your right hand.
Sent 10: What hand do you think the reflection will wave back with?
Sent 11: The same hand?
Sent 12: A different hand?
Sent 13: You will notice something interesting.
Sent 14: The reflection waves back with the hand on the same side as you, but it is their left hand.
Sent 15: The image in a reflection is reversed.
Sent 16: This is just like the image of the sign above.
Sent 17: Light rays strike flat shiny surfaces and are reflected.
Sent 18: The reflections are reversed.
Question: What is an example of reflection reversal? (A) When you wave with your right hand, your image also waves with its right hand (B) When you wave with your right hand, your image waves with its left hand (C) Your reflection will waves and moves around (D) Wave to your reflection with your right hand and the reflection waves back with the hand on the same side as you, but it is their left hand (E) When you waves with your right hand at your reflection,your reflection will waves back to you with a hand on the same side a your right hand but that is the reflection left hand.
Example Output:
B, D, E.