Identify the correct combination of true (T) and false (F) for the following three statements.

STATEMENT-1: When temperature of a system is constant, then its change in internal energy must be zero.

STATEMENT-2: In free expansion of gas $Q$, $\Delta U$ and $W$ all are zero.

STATEMENT-3: If a gas follows the equation $P \propto 1/\sqrt{V}$ then the bulk modulus of elasticity of the gas is $P/2$, where $P$ is the pressure of the gas.