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 length of a rectangular plot is 10 mtr more than its width . the cost of fencing the plot along its perimeter at the rate of rs . 6.5 mtr is rs . 1950 . the perimeter of the plot is ? 
Options: ['a ) 126', 'b ) 156', 'c ) 190', 'd ) 300', 'e ) 260']

Ex Output:
d


Ex Input:
Problem: one side of a rectangular field is 15 m and one of its diagonals is 17 m . find the area of the field in meter square 
Options: a ) 100 , b ) 110 , c ) 120 , d ) 130 , e ) 140

Ex Output:
c


Ex Input:
Problem: if the height of a triangle is decreased by 40 % , land its base is increased by 40 % , what will be the effect on its area ? 
Options: ['a ) no change', 'b ) 16 % increase', 'c ) 8 % decrease', 'd ) 16 % decrease', 'e ) none of thes']

Ex Output:

d