Assertion : Light year and year, both measure time.
Reason : Because light year is the time light takes to reach the earth from the sun.
A. If both assertion and reason are true and the reason is the correctexplanation of the assertion.
B. If both assertion and reason are true but reason is not the correctexplanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.