Task: Question Answering
Input (English): Problem: a man can row 6 kmph in still water . when the river is running at 3 kmph , it takes him 1 hour to row to a place and black . what is the total distance traveled by the man ? 
Options: a ) 5.75 , b ) 4.5 , c ) 5.76 , d ) 5.74 , e ) 5.71
Output (English): b