Assertion (A) : Three-fourth of the earth's surface is covered

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Assertion (A) : Three-fourth of the earth's surface is covered with sedimentary rocks.
Reason (R) : They make up only about 5 percent of the volume of earth's crust.

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

Correct Option: B

NA