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

Ex Input:
Problem: three interviewers , a , b , and c are interviewing 30 applicants . only with three interviewers ' admission can an applicant be admitted . if interviewer a admitted 10 applicants , b admitted 12 applicants , and c admitted 15 applicants , at least how many applicants get the admission ? 
Options: a ) 6 , b ) 2 , c ) 0 , d ) 8 , e ) 12

Ex Output:
c


Ex Input:
Problem: 50 square stone slabs of equal size were needed to cover a floor area of 72 sq . m . find the length of each stone slab ? 
Options: a ) 120 cm , b ) 767 cm , c ) 88 cm , d ) 666 cm , e ) 776 cm

Ex Output:
a


Ex Input:
Problem: the length of a rectangle is reduced by 10 % . by what % would the width have to be increased to maintain the original area ? 
Options: a ) 10 % , b ) 11.1 % , c ) 25 % , d ) 30 % , e ) 35 %

Ex Output:

b