Task: Question Answering
Input (English): Problem: susan drives from city a to city b . after two hours of driving she noticed that she covered 80 km and calculated that , if she continued driving at the same speed , she would end up been 15 minutes late . so she increased her speed by 10 km / hr and she arrived at city b 36 minutes earlier than she planned . find the distance between cities a and b . 
Options: a ) 223 , b ) 376 , c ) 250 , d ) 378 , e ) 271
Output (English): c