Assertion : Consciousness is considered as the defining property of living organisms.
Reason: All organisms, from the prokaryotes to the most complex eukaryotes can sense and respond to environmental stimuli.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false