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

Example Input: Problem: a 1.5 by 2 rectangle is inscribed in circle . what is the circumference of the circle ? 
Options: ['a ) 2.5 π', 'b ) 3 π', 'c ) 3.5 π', 'd ) 4 π', 'e ) 5.5 π']
Example Output: a

Example Input: Problem: the perimeter of a triangle is 36 cm and the inradius of the triangle is 2.5 cm . what is the area of the triangle ? 
Options: a ) 38 cm 2 , b ) 27 cm 2 , c ) 45 cm 2 , d ) 25 cm 2 , e ) 35 cm 2
Example Output: c

Example Input: Problem: a rectangular garden is to be twice as long as it is wide . if 900 yards of fencing , including the gate , will completely enclose the garden , what will be the length of the garden , in yards ? 
Options: a ) 40 , b ) 50 , c ) 60 , d ) 200 , e ) 300
Example Output:
e