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.

Options

A. Both (A) and ( R) are true and (R ) is the correct explanations of (A)
B. Both (A) and ( R) are true but (R ) is the correct explanations of (A)
C. (A) is true statement but (R )is false
D. Both (A) and (R ) are false

Answer

B