Task: Question Answering
Input (English): Question: Chang Li has pet cockroaches that multiply at the same rate every week.
The first week he had 5, the next week he had 10, the second week he had 20, and the fourth week he had 80. How many did he have on week 3?

 Option A: 30

 Option B: 25

 Option C: 40

 Option D: 60

 Option E: 50
Output (English): Option C