Task: Question Answering
Input (English): Problem: a car traveling at a certain constant speed takes 2 seconds longer to travel 1 kilometer than it would take to travel 1 kilometer at 100 kilometers per hour. at what speed, in kilometers per hour, is the car traveling ?
Options: a. 71.5, b. 72, c. 72.5, d. 73, e. 94.7
Output (English): e