Assertion (A) : The earliest organisms that appeared on the Earth were non-green and presumably anaerobis.
Reason (R ) : The first autotrophic organisms were the chemoautotrophs that never released oxygen.
A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are true and Reason is not the correct explanation of Assertion
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false
