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: a sucrose solution contains 10 grams of sucrose per 100 cubic centimeters of solution . if 60 cubic centimeters of the solution were poured into an empty container , how many grams of sucrose would be in the container ?
Options: ['a ) 4.00', 'b ) 6.00', 'c ) 5.50', 'd ) 6.50', 'e ) 6.75']
Example Output: b

Example Input: Problem: a is twice as good a workman as b and together they complete a work in 12 days . in how many days a alone can do the work ?
Options: a ) 32 , b ) 33 , c ) 34 , d ) 35 , e ) 36
Example Output: e

Example Input: Problem: a train running at the speed of 60 km / hr crosses a pole in 15 seconds . find the length of the train ?
Options: a ) 250 meter , b ) 876 meter , c ) 167 meter , d ) 719 meter , e ) 169 meter
Example Output:
a