Task: Question Answering
Input (English): Problem: the speed at which a man can row a boat in still water is 15 kmph . if he rows downstream , where the speed of current is 3 kmph , what time will he take to cover 30 metres ? 
Options: a ) 6 , b ) 8 , c ) 12 , d ) 4 , e ) 13
Output (English): a