Given below are two statements: $\\$ One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): $\\$ The stretching of a spring is determined by the shear modulus of the material of the spring. $\\$ Reason (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 answer from the options given below: