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: the sides of a triangle are in the ratio 5 : 12 : 13 and its perimeter is 360 m , its area is ? 
Options: a ) 180 , b ) 882 , c ) 277 , d ) 261 , e ) 281

Ex Output:
a


Ex Input:
Problem: what is the measure of the radius of the circle that circumscribes a triangle whose sides measure 11 , 60 and 61 ? 
Options: a ) 6.5 , b ) 12.5 , c ) 28 , d ) 30.5 , e ) 40

Ex Output:
d


Ex Input:
Problem: the area of a square is equal to five times the area of a rectangle of dimensions 36 cm * 20 cm . what is the perimeter of the square ? 
Options: a ) 289 cm , b ) 800 cm , c ) 829 cm , d ) 240 cm , e ) 289 cm

Ex Output:

d