Given the task definition and input, reply with output. In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: Aging is associated with the death of cells., Fact2: If the waste accumulates, the cell ages and dies., Question: What do dying cells do? (A) Move to another area (B) survival (C) accumulate waste (D) harm them (E) kill them (F) They may not survive. (G) keeps the organism warm (H) forest is destroyed
C