In the situation shown in figure, both the pulleys and the strings are light and all the surfaces are frictionless. The acceleration of mass M, tension in the string PQ and force exerted by the clamp on the pulley, will respectively be -

Options

A. `(2//3)"g",(1//3) "Mg",(sqrt2//3)"Mg"`
B. `(1//3)"g",(1//3) "Mg",(sqrt2//3)"Mg"`
C. `(1//3)"g",(2//3) "Mg",sqrt3"Mg"`
D. `2"g",(1//2) "Mg",sqrt2"Mg"`