Let $X$ and $Y$ are two events such that $P ( X \cup Y ) = P ( X \cap Y )$. Statement 1: $P ( X \cap Y' ) = P ( X' \cap Y ) = 0$. Statement 2: $P ( X ) + P ( Y ) = 2 P ( X \cap Y )$\\
(1) Statement 1 is false, Statement 2 is true.\\
(2) Statement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation of Statement 1.\\
(3) Statement 1 is true, Statement 2 is false.\\
(4) Statement 1 is true, Statement 2 is true; Statement 2 is a correct explanation of Statement 1.