Task: Question Answering
Input (English): Question: Elizabeth can get a certain job done in 15 days, and Tony can finish only 75% of that job within the same time. Tony worked alone for several days and then Elizabeth joined him, so they finished the rest of the job in 6 days, working together.
For how many days have each of them worked and what percentage of the job have each of them completed?

 Option A: 5 days and 40%

 Option B: 6 days and 30%

 Option C: 6 days and 40%

 Option D: 7 days and 40%

 Option E: 7 days and 30%
Output (English): Option C