[A] : Living organisms are like a close system .
[R] : Energy in the organisms neither can be lost nor gained from the another environment .

Options

A. 1)If both A and R are true and R is the correct explanation of A
B. 2)If both A and R are true but R is not the correct explanation of A
C. 3)If A is false and R is true
D. 4)If both A and R are false