With reference to food chains in ecosystems, consider the following statements:1. A food chain 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