With reference to thermoregulation in animals, consider the following statements:

1. In cold-blooded animals, the body temperature tends to match with the environmental temperature in which they live.

2. Human beings are cold-blooded species as they regulate their temperature according to the external environment.

3. Warm-blooded animals require more food and energy as compared to cold-blooded animals of the same weight.

Select the correct answer using the code given below.