Task: Question Answering
Input (English): Problem: after striking the floor , a rubber ball rebounds to 4 / 5 th of the height from which it has fallen . find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres . 
Options: a ) 540 m , b ) 960 m , c ) 1080 m , d ) 1020 m , e ) 1120 m
Output (English): c