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: a rectangular region has a fence along three sides and a wall along the fourth side . the fenced side opposite the wall is twice the length of each of the other two fenced sides . if the area of the rectangular region is 200 square feet , what is the total length of the fence , in feet ? 
Options: ['a ) 10', 'b ) 20', 'c ) 30', 'd ) 40', 'e ) 80']

Ex Output:
d


Ex Input:
Problem: if the sides of a triangle are 26 cm , 24 cm and 12 cm , what is its area ? 
Options: a ) 144 , b ) 772 , c ) 288 , d ) 266 , e ) 2848

Ex Output:
a


Ex Input:
Problem: the diagonals of two squares are in the ratio of 2 : 5 then find the ratio of its areas ? 
Options: a ) 2 : 12 , b ) 4 : 25 , c ) 5 : 31 , d ) 2 : 19 , e ) 3 : 17

Ex Output:

b