Task: Question Answering
Input (English): Problem: a train travels from albany to syracuse , a distance of 120 miles , at the average rate of 50 miles per hour . the train then travels back to albany from syracuse . the total travelling time of the train is 5 hours and 30 minutes . what was the average rate of speed of the train on the return trip to albany ? 
Options: a ) 31 , b ) 38.7 , c ) 35 , d ) 36 , e ) 39
Output (English): b