In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: p can do a work in the same time in which q and r together can do it . if p and q work together , the work can be completed in 10 days . r alone needs 30 days to complete the same work . then q alone can do it in 
Options: a ) 10 , b ) 22 , c ) 25 , d ) 27 , e ) 30

Output: e


Input: Consider Input: Problem: 63 men working 8 hours per day dig 30 m deep . how many extra men should be put to dig to a depth of 50 m working 6 hours per day ? 
Options: a ) a ) 87 , b ) b ) 77 , c ) c ) 66 , d ) d ) 55 , e ) e ) 97

Output: b


Input: Consider Input: Problem: a 1200 m long train crosses a tree in 120 sec , how much time will i take to pass a platform 300 m long ? 
Options: a ) 176 sec , b ) 190 sec , c ) 178 sec , d ) 150 sec , e ) 276 sec


Output: d