Task: Question Answering
Input (English): Problem: malar and roja combined will complete a task in 35 days , but malar alone can complete same work in 60 days . calculate in how many days roja can complete this work ? 
Options: a ) 85 days , b ) 45 days , c ) 90 days , d ) 84 days , e ) 95 days
Output (English): d