Task: Question Answering
Input (English): Problem: an engineer designed a ball so that when it was dropped, it rose with each bounce exactly one - half as high as it had fallen. the engineer dropped the ball from a 16 - meter platform and caught it after it had traveled 45 meters. how many times did the ball bounce ?
Options: a. 5, b. 4, c. 7, d. 8, e. 9
Output (English): b