Task: Question Answering
Input (English): Question: An inlet pipe can fill the tank in 30 minutes. B an outlet pipe can empty the tank in 45 minutes. In what time the tank be filled if both pipes work simultaneously?

 Option A: 90 minutes

 Option B: 80 minutes

 Option C: 70 minutes

 Option D: 60 minutes

 Option E: 50 minutes
Output (English): Option A