Question

A : Intensity of an earthquake is a measurement of the energy released during an earthquake.
R : Mercallis scale is used to measure intensity of an earthquake.

1) Only A is correct

2) Only R is correct

3) Both A and R are correct and R is correct explanation of A.

4) Both A and R are correct but R is not the correct explanation of A.
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Answer 1

Answer:

3) Both A and R are correct and R is correct explanation of A