Task: Question Answering
Input (English): Question: The average (arithmetic mean) of four numbers is 4x + 1. If one of the numbers is x, what is the average of the other three numbers?

 Option A: x + 1

 Option B: 3x + 3

 Option C: 5x + 4/3

 Option D: 5x + 4

 Option E: 15x + 12
Output (English): Option C