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: 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

Ex Output:
a


Ex Input:
Problem: a rectangular plot 15 m × 10 m , has a path of grass outside it . if the area of grassy pathway is 54 m 2 , find the width of the path . 
Options: ['a ) 4 m', 'b ) 3 m', 'c ) 2 m', 'd ) 1 m', 'e ) none of these']

Ex Output:

c