Given the task definition and input, reply with output. In this task, you will be shown a conversation and a question. You need to answer the question and choose the correct option based on the conversation. "W" and "M" in the conversations stand for "woman" and "man".

F: Look at the workers there with thick glasses over their eyes. M: Don't you know they can keep their eyes safe?, Question: Why do the workers wear thick glasses? (A) Because they can't see. (B) Because the weather is very hot. (C) Because they will keep their eyes safe.
(C) Because they will keep their eyes safe.