Cladogram is a diagram used to represent the evolutionary relationship between groups of organisms. The following cladogram shows relationship between some groups of vertebrates. From the options provided, identify the features that denote M , N , O , P , Q and R in the correct order.

Options

1. AVertebrae, Bony skeleton, Four limbs, Amniotic egg, Eggs with shells, Hair
2. BVertebrae, Four limbs, Bony skeleton, Amniotic egg, Hair, Eggs with shells
3. CVertebrae, Bony skeleton, Amniotic egg, Four limbs, Eggs with shells, Hair
4. DVertebrae, Bony skeleton, Four limbs, Hair, Eggs with shells, Amniotic egg