(A) : The Bt toxin proteins exist as inactive protoxins.
(R) : It is converted into an active form of toxin by the acidic pH of the gut of the insect.

Options

A. If both (A) and (R) are true and (R) is the correct explanation of (A).
B. If both (A) and (R) are true but (R) is not the correct explanation of (A).
C. If (A) is true but (R) is false.
D. If both (A) and (R) are false.

Answer

C