Assertion: Oxygen addition in the control flow gases of solid rocket engine will result in a higher characteristic velocity of the exit jet.Reason: Because of secondary combustion, stagnation temperature and pressure increase. Higher stagnation temperature results in exhaust jet characteristic velocity.

• A. Both assertion and reason are correct
• B. The assertion is correct but the reason is wrong
• C. The assertion is wrong but the reason is correct
• D. Both assertion and reason are wrong