A tree depicting the evolutionary relationships between a few animals is given below.



The correct statement regarding the characters $1-5$ is:

• A

  characters 3 and 4 are amnion and four limbs respectively.
• B

  character 4 could be hair covering the skin.
• C

  character 1 could represent loss of limbs while 2 could represent lungs.
• Correct answer
  D

  characters 2 and 5 could be hinged jaw and hair respectively.

Hence, the correct answer is option: 'D'.