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Given below are two statements: One is l...

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 a same dimensions.
in the light of the above statement choose the most appropriate answer from the options given below

A

both A and R are true and R is correct explanation of A

B

both A and R are true and R is not correct explanation of A

C

A is true and R is false

D

A is false but R is true

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