Assertion (A) In contrast to temperate forests, if tropical rain forests are inspected, then productive agricultural sites emerge, which can sustain intensive agriculture for many years without chemical fertilizers. Reason (R) The principal productivity of tropical rain forests is much higher than that of temperate forests.

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R and R is not the correct explanation of A.
• C. A is right but R is wrong
• D. A is wrong but R is right