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: In 1964 , in the peak of Beatlemania , a reluctant John Lennon is persuaded by manager Brian Epstein to meet Freddie Lennon , the father who abandoned him seventeen years earlier , with the press in attendance .
Sent 2: When they meet , John accuses his father of abandoning him , but his father says that '' he left it up to John . ''Sent 3: John and Brian quickly leave the meeting .
Sent 4: The movie then jumps to 1967 , after Brian Epstein has died .
Sent 5: The Beatles are giving a press conference about their new film , Magical Mystery Tour .
Sent 6: John is skeptical about the film , but Paul convinces him to go through with the idea .
Sent 7: John then invites his father to his mansion to live with him .
Sent 8: Freddie Lennon arrives and meets his grandson , Julian .
Sent 9: Sitting with his wife , John reads the criticism of Magical Mystery Tour , while comparing his wife to Brigitte Bardot , whom he says he will meet after he returns from India .
Sent 10: John finds a letter addressed to him , with the word '' Breathe '' written on it .
Sent 11: Later , after finding his father in a neighbor's house , Freddie reveals that he has a 19 year old girlfriend named Pauline , with whom he wants to live .
Sent 12: Lennon accuses his father of leaving him again , and then leaves , after telling his father that he wo n't live with him anymore .
Sent 13: After meeting Maharishi Mahesh Yogi , the Beatles quickly return to London , and in a press conference they say they made a mistake when they trusted Maharishi .
Sent 14: The journalists are curious about the Beatles new business -- Apple Records .
Question: How many events are the press present for? (A) 4 (B) More than twice (C) 1 (D) 2 (E) 3.

Output: E.

Input: Consider Input: Paragraph- Sent 1: From Babylon, Alexander went to Susa, one of the Achaemenid capitals, and captured its legendary treasury.
Sent 2: He sent the bulk of his army to the Persian ceremonial capital of Persepolis via the Royal Road.
Sent 3: Alexander himself took selected troops on the direct route to the city.
Sent 4: He had to storm the pass of the Persian Gates (in the modern Zagros Mountains) which had been blocked by a Persian army under Ariobarzanes and then hurried to Persepolis before its garrison could loot the treasury.
Sent 5: On entering Persepolis, Alexander allowed his troops to loot the city for several days.
Sent 6: Alexander stayed in Persepolis for five months.
Sent 7: During his stay a fire broke out in the eastern palace of Xerxes and spread to the rest of the city.
Sent 8: Possible causes include a drunken accident or deliberate revenge for the burning of the Acropolis of Athens during the Second Persian War.
Question: What are the possible causes of the fire that broke out in the eastern palace of Xerxes? (A) War (B) A drunken accident or deliberate revenge for the burning of the Acropolis (C) Spontaneous combustion (D) A drunken accident, or deliberate revenge (E) A drunken accident or revenge.

Output: B, D, E.

Input: Consider Input: Paragraph- Sent 1: The inhabited history of the Las Vegas Valley stretches to 23,000 b.c.
Sent 2: , when much of the area was covered by a prehistoric lake.
Sent 3: During this period, the indigenous people lived in caves, hunting the mammals that gathered at the shoreline.
Sent 4: The landscape of the valley changed dramatically over the next 200 centuries.
Sent 5: The glaciers feeding the lake melted away and the lake evaporated.
Sent 6: Fossils tell an obscure story of man's slow and sporadic development.
Sent 7: Around 3000 b.c.
Sent 8: , native Archaic Indians began to develop a lasting hunting and gathering culture.
Sent 9: By this time, the valley was in much the same geographic state as it exists in today, with one exceptionthe presence of artesian springs that bubbled to the surface in several areas.
Sent 10: These springs fed a network of streams draining through the Las Vegas Wash to the Colorado River.
Sent 11: The areas surrounding the springs were desert oases: sprawling collections of grasses, trees, and wildlife.
Sent 12: Many springs lay in areas that would eventually become the center of the modern Las Vegas metropolis.
Sent 13: For about 4000 years, the Archaics thrived in a culture that included many signs of early civilization.
Sent 14: Signs of even more advancement appeared halfway through the first millennium a.d.
Sent 15: , when the Anasazi Indians inhabited the valley.
Sent 16: Far more progressive than the Archaics, the Anasazi utilized such formal agricultural techniques as irrigation to assist their harvest.
Sent 17: This permitted the Anasazi to achieve a benchmark of advanced societythe ability to live in permanent shelters year-round without need to follow wildlife.
Sent 18: Mysteriously, the Anasazi vanished from the valley around a.d.
Question: What permitted the Anasazi to achieve a benchmark of advanced society? (A) Formal agricultural techniques (B) The use of tipis year round (C) Bow and arrow (D) Usage of saltpeter (E) Formal agricultural techniques like irrigation allowed them to live in permanent shelters year-round without the need to follow wildlife (F) Permanent shelters (G) Following wildlife.
Output: A, E, F.