A = The most uniques mammalian characteristic is the presence of milk producing glands.
R = They have two pairs of limbs, adapted for walking, running, climbing, burrowing swimming and flying.
(A) Both Assertion and Reason are true and Reson is the correct explanation of Assertion.
(B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(C) Assertion is true but reason is false
(D) Both Assertion and Reason are false.
(E) Assertion is false but reason is true.
