question_answer

Assertion [A]: All living organisms do not require a source of energy. Reason [R]: Both chemotrophs and phototrophs exist among bacteria.

A)  If both A and R are true and R is the correct explanation of A

B)  If both A and R are true but R is not the correct explanation of A

C)  If A is true but R is false

D)  If both A and R are false

E)  If A is false but R is true