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:

1. A Both \((A)\) and \((R)\) are true and \((R)\) is not the correct explanation of \((A)\)
2. B \((A)\) is true but \((R)\) is false
3. C \((A)\) is false but \((R)\) is true
4. D Both \((A)\) and \((R)\) are true and \((R)\) is the correct explanation of \((A)\)