Consider the following statements1. Heart is three chambered in fishes2. Heart is four chambered in birds3. All animal of class amphibia are characterised by two pairs of limbs4. All reptiles of limbsWhich of these statements are correct?

Consider the following statements1. Heart is three chambered in fishes

1.	Consider the following statements 1. Heart is three chambered in fishes 2. Heart is four chambered in birds 3. All animal of class amphibia are characterised by two pairs of limbs 4. All reptiles of limbs Which of these statements are correct?
A.	1, 2, 3 and 4
B.	1 and 3
C.	2 and 4
D.	2, 3 and 4
Answer» D. 2, 3 and 4