Task: Question Answering
Input (English): Question: A boat traveled upstream 90 miles at an average speed of (v-3) miles per hour and then traveled the same distance downstream at an average speed of (v+3) miles per hour. If the trip upstream took a half hour longer than the trip downstream, then how many hours did it take the boat to travel downstream?

 Option A: 2.5

 Option B: 2.4

 Option C: 2.3

 Option D: 2.2

 Option E: 2.1
Output (English): Option A