Task: Question Answering
Input (English): Question: Before a salary increase, the weekly salary of a worker for 42 hours in a week was as much as the worker is paid now for 40 hours of work in a week. What is the percent increase in the worker's salary per hour?

 Option A: 3

 Option B: 4

 Option C: 5

 Option D: 6

 Option E: 7
Output (English): Option C