In each of the following questions a statement of Assertion is given followed by a corresponding statements, of Reason just below it of the statements, mark the correct answer as.
Assertion (A) The mass of the earth is `M_E=4/3piRB/RP_1` where `M_E` is its radius and p is the density
Reason (R) The entire earth is assumed to be of uniform density.

Options

A. Both Assertion and Reason are correct and Reason Is the correct explanation of the Assertion
B. Both Assertion and Reason are correct but Reason Is not the correct explanation of Assertion
C. Assertion Is correct but Reason Is Incorrect
D. Reason Is correct but Assertion Is Incorrect

Answer

A