The Equation Below Shows the Reaction of Chloroform (CHCl₃) with Hydrogen

The equation below shows the reaction of chloroform (CHCl₃) with hydrogen (H₂) to produce methane (CH₄) and chlorine (CL₂) :
2CHCl₃(g) + 3H_2(g) + heat ↔ 2CH₄(g) + 3CL₂(g)
Which of the following changes will shift the equilibrium to the right, producing more methane?

A) raising the temperature of the reaction
B) lowering the concentration of hydrogen
C) increasing the total pressure of the gases
D) increasing the volume of the reaction vessel