Task: Question Answering
Input (English): Problem: a train travels from new york to chicago, a distance of approximately 270 miles, at an average rate of 30 miles per hour and arrives in chicago at 6: 00 in evening, chicago time. at what hour in the morning, new york time, did the train depart for chicago ? ( note: chicago time is one hour earlier than new york time.
Options: a. 3: 00, b. 4: 00, c. 10: 00, d. 6: 00, e. 7: 00
Output (English): c