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 grass field is 75 m * 55 m , it has a path of 2.5 m wide all round it on the outside . find the area of the path and the cost of constructing it at rs . 3 per sq m ?
Options: a ) 675 , rs . 2025 , b ) 575 , rs . 1350 , c ) 1350 , rs . 675 , d ) 1450 , rs . 775 , e ) 1550 , rs . 875

Ex Output:
a

Ex Input:
Problem: what is the perimeter of a square field whose diagonal is 4 2 ?
Options: a ) 16 m , b ) 32 m , c ) 27 m , d ) 26 m , e ) 76 m

Ex Output:
a

Ex Input:
Problem: how many books each of volume 100 meter cube can be packed into a crate of volume 3000 meter cube ?
Options: a ) 50 , b ) can not be determined , c ) 150 , d ) 300 , e ) 350

Ex Output:
b