India's nuclear policy has been largely based on maintaining a posture of "No First Use" (NFU), which means that India will not use nuclear weapons unless first attacked by an adversary using nuclear weapons. However, in recent years, there has been a shift in India's stance, with discussions suggesting that this policy might be reviewed depending on future security dynamics.
Thus, the correct answer is (C) Now India has made it clear that the policy of 'no first use' can be reviewed.