Which equilibrium reaction shifts to the product side when the temperature is increased at constant pressure and to the reactant side when the total pressure is increased at constant temperature?

A.     \({{\text{N}}_{\text{2}}}{\text{(g)}} + {\text{3}}{{\text{H}}_{\text{2}}}{\text{(g)}} \rightleftharpoons {\text{2N}}{{\text{H}}_{\text{3}}}{\text{(g)}}\)     \(\Delta {H^\Theta } < 0\)

B.     \({{\text{N}}_{\text{2}}}{{\text{O}}_{\text{4}}}{\text{(g)}} \rightleftharpoons {\text{2N}}{{\text{O}}_{\text{2}}}{\text{(g)}}\)     \(\Delta {H^\Theta } > 0\)

C.     \({{\text{H}}_{\text{2}}}{\text{(g)}} + {{\text{I}}_{\text{2}}}{\text{(g)}} \rightleftharpoons {\text{2HI(g)}}\)     \(\Delta {H^\Theta } < 0\)

D.     \({\text{PC}}{{\text{l}}_{\text{3}}}{\text{(g)}} + {\text{C}}{{\text{l}}_{\text{2}}}{\text{(g)}} \rightleftharpoons {\text{PC}}{{\text{l}}_{\text{5}}}{\text{(g)}}\)     \(\Delta {H^\Theta } > 0\)

B