Assertion (A): Insect resistant transgenic cotton has been produced by inserting Bt gene. [1999]Reason (R): The Bt gene is derived from a bacterium.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not a correct explanation of A
• C. A is true but R is true
• D. A is false but R is true