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