Assertion Reasoning Spring Shear Modulus

Given below are two statements : One is labelled as Assertion (A) and other is labelled as Reasoning ( R) .
Assertion (A) : The stretching of a spring is determined by the shear modulus of the material of the spring.
Reasoning ( R) : A coil spring of copper has more tensile strength than a steel spring of same dimensions.
In the light of the above statements, choose the most appropriate answers from the options given below