Task: Question Answering
Input (English): Question: It takes 8 high school students, working at identical constant individual rates, 10 hours to paint a certain house. At what time will the house be fully painted if 8 students start painting at 9:00 am and one student, working at the same rate, is added per hour starting at 2:00 pm?

 Option A: 5:10 pm

 Option B: 5:30 pm

 Option C: 5:50 pm

 Option D: 6:10 pm

 Option E: 6:30 pm
Output (English): Option C