What is the ratio of stiffness of the spring A to the stiffness of the spring?

Question

A closed coiled helical tension spring having 20 coils is cut in two parts such that part A has 8

coils and part B has 12 cols. What is the ratio of stiffness of the spring A to the stiffness of the

spring?

            (a) 1                 (b) ½                (c) 3/2              (d) ¾