Detailed Instructions: 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.
Q: Paragraph- Sent 1: Many plants and animal species have lived on Earth.
Sent 2: Most are no longer alive.
Sent 3: Only a tiny number of species still live on Earth.
Sent 4: If not for fossils, we would know little about species that did not survive.
Sent 5: Fossils provide evidence.
Sent 6: They give us clues to past life on Earth.
Sent 7: They tell us that life on Earth has changed over time.
Sent 8: Fossils in younger rock Fossils can also tell us about how plants and animals lived in the past.
Sent 9: Was it land or marine?
Sent 10: Was the water shallow or deep?
Sent 11: Fossils can even provide clues to ancient climates.
Sent 12: They can tell us if it was warm or cold.
Sent 13: Maybe it was cold or hot?
Sent 14: Some places that are now cold were once warm.
Sent 15: Some places that are now hot and dry were once wet and cool.
Sent 16: Fossils provide a window into the past. 
Question: Are most of the plants and animals that have lived on Earth still alive? (A) No (B) Yes (C) Only a tiny number of species still live on Earth.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
A, C.