同温同压下，已知下列各反应为放热反应，下列各热化学方程式△H最小的是

A．2A ( l ) + B ( l ) =" 2C" (g )△H1	B．2A ( g ) + B ( g ) =" 2C" (g )△H2
C．2A ( g ) + B ( g ) =" 2C" ( l )△H3	D．2A ( l ) + B ( l ) =" 2C" ( l )△H4