Task: Question Answering
Input (English): Problem: in a kilo meter race , if a gives b a 40 m start , a wins by 19 s . but if a gives b a 30 s start , b wins by 40 m . find the time taken by b to run 5,000 m ? 
Options: a ) 150 s , b ) 450 s , c ) 750 s , d ) 825 s , e ) 925 s
Output (English): c