Task: Question Answering
Input (English): Question: Bob finishes the first half of an exam in one-fifth the time it takes him to finish the second half. If the whole exam takes him an hour, how many minutes does he spend on the first half of the exam?

 Option A: 20

 Option B: 24

 Option C: 27

 Option D: 36

 Option E: 40
Output (English): Option A