Food chains differ from food webs in that: (i) food chains are single sequence of who eats whom in a community. (ii) food chains better represent the entire community. (iii) food webs represent the complex interaction among food chains. (iv) food chain is the flow of energy in a population.

• A. (i) and (iii)
• B. (i) and (iv)
• C. (i), (ii) and (iii)
• D. (i), (ii), (iii) and (iv)