Task: Question Answering
Input (English): Question: The ‘moving walkway’ is a 300-foot long conveyor belt that moves continuously at 3 feet per second. When Bill steps on the walkway, a group of people that are also on the walkway stands 120 feet in front of him. He walks toward the group at a combined rate (including both walkway and foot speed) of 6 feet per second, reaches the group of people, and then remains stationary until the walkway ends. What is Bill’s average rate of movement Q for his trip along the moving walkway?

 Option A: 2 feet per second

 Option B: 2.5 feet per second

 Option C: 3 feet per second

 Option D: 4 feet per second

 Option E: 5 feet per second
Output (English): Option E