Task: Question Answering
Input (English): Problem: two trains 121 meters and 153 meters in length respectively are running in opposite directions , one at the rate of 80 km and the other at the rate of 65 kmph . in what time will they be completely clear of each other from the moment they meet ? 
Options: a ) 7.19 , b ) 6.8 , c ) 7.2 , d ) 7.15 , e ) 7.11
Output (English): b