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'.

Example Input: Problem: the speed of a boat in still water is 20 km / hr and the rate of current is 5 km / hr . the distance travelled downstream in 27 minutes is :
Options: a ) 9.25 , b ) 5.25 , c ) 7.25 , d ) 6.25 , e ) 11.25
Example Output: e

Example Input: Problem: a train 280 m long , running with a speed of 72 km / hr will pass a tree in
Options: a ) 14 sec , b ) 15 sec , c ) 16 sec , d ) 20 sec , e ) none
Example Output: a

Example Input: Problem: the average temperature for tuesday , wednesday and thursday was 32 c . the average temperature for wednesday , thursday and friday was 34 c . if the temperature on friday be 44 c , what was the temperature on tuesday ?
Options: a ) 39 c , b ) 44 c , c ) 38 c , d ) 42 c , e ) none of these
Example Output:
c