With reference to food chains in ecosystems, consider the following statements:

1. A food chains illustrates the order in which a chain of organisms feed upon each other.

2. Food chains are found within the populations of a species.

3. A food chain illustrates the numbers of each organism which are eaten by others.

Which of the statements given above is/are correct?

(a) 1 only               

(b) 1 and 2 only

(c) 1, 2 and 3         

(d) None