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(A): A wire may be stiffer than another ...

(A): A wire may be stiffer than another wire B. But B may stronger than A
(R): A high Young's modulus does not necessarily imply a high value for the breaking stress

A

Both .A. and .R. are true and .R. is the correct explanation of .A.

B

Both .A. and .R. are true and .R. is not the correct explanation of .A.

C

A. is true but .R. is false

D

A. is false but .R. is true

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