Regarding the given assertion and reason, choose the right option.
Assertion [A]: Food webs are formed because of complex feeding relationships between organisms.
Reason [R]: Most organisms feed at one or more trophic levels in a food chain.
A. Both A and R are true and R explains A.
B. Both A and R are true R does not explain A.
C. A is true and R is false.
D. Both A and R are false.