Choose the correct alternative from the following : - Assertion (A) : The Indian Constitution came into force with effect from 26th January, 1950.
Reason (R) : 26th January is celebrated as the Republic Day.

Answer: B. Both A and R are true but R is NOT the correct explanation of A.

The Indian Constitution came into force with effect from January 26, 1950 and since then this day is celebrated as the Republic Day.