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

Input: Consider Input: Problem: the perimeter of a triangle is 48 cm and the in radius of the triangle is 2.5 cm . what is the area of the triangle ? 
Options: a ) 76 , b ) 88 , c ) 60 , d ) 55 , e ) 35

Output: c


Input: Consider Input: Problem: 30 square stone slabs of equal size were needed to cover a floor area of 50.7 sq . m . find the length of each stone slab ? 
Options: a ) 130 cm , b ) 767 cm , c ) 88 cm , d ) 666 cm , e ) 776 cm

Output: a


Input: Consider Input: Problem: what is the measure of the radius of the circle that circumscribes a triangle whose sides measure 5 , 12 and 13 ? 
Options: a ) 2.5 , b ) 6.5 , c ) 5 , d ) 6.0 , e ) 7


Output: b