If the volume of the racion flask is reduced to half of its initial value and temperature is kept constant the in which of the following cases the position of equilibrium will shift?
A. `CO(g)+H_(2)O(g)hArrCO(2)(g)+H_(2)(g)`
B. `I_(2)(g)hArr2I(g)`
C. `NH_(4)HS_(s)hArrNH_(3)(g)+H_(2)S(g)`
D. `2NOCI(g)hArr2NO(g)+CI_(2)(g)`