Task: Question Answering
Input (English): Question: A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 4 days before the completion of the work. In how many days was the work completed?

 Option A: 32

 Option B: 88

 Option C: 67

 Option D: 11

 Option E: 66
Output (English): Option D