Task: Question Answering
Input (English): Problem: two trains start from a & b and travel towards each other at speed of 50 kmph and 60 kmph resp . at the time of the meeting the second train has traveled 100 km more than the first . the distance between them . 
Options: a ) 800 km , b ) 900 km , c ) 1000 km , d ) 1100 km , e ) 1200 km
Output (English): d