Task: Question Answering
Input (English): Problem: suresh can complete a job in 15 hours . ashutosh alone can complete the same job in 10 hours . suresh works for 9 hours and then the remaining job is completed by ashutosh . how many hours will it take ashutosh to complete the remaining job alone ? 
Options: a ) 4 , b ) 5 , c ) 6 , d ) 12 , e ) none of these
Output (English): a