When a body of mass M1 is hanging freely and an other of mass M2 lying on a smooth inclined plane( ) are connected by a light indextensible string passing over a smooth pulley, the acceleration of the body of mass M1, will be given by

• A. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.170-1.png">
• B. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.170-2.png">
• C. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.170-3.png">
• D. <img src="/_files/images/civil-engineering/applied-mechanics/112-5.170-4.png">