In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices:
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Assertion is correct statement but reason is wrong statement.
Assertion is wrong statement but reason is correct statement.
Assertion:The ratio of the amplitudes of elctric and mgnetic fields is constant and it is equal to velocity of the electromagnetic waves in free space.
Reason:It is because,`B_0= c E_0`.

Options

A. A
B. B
C. C
D. D.