Use the Standard Reaction Enthalpies Given Below to Determine

Use the standard reaction enthalpies given below to determine H° for the following reaction: P₄(g) + 10Cl₂(g) → 4PCl₅(s) H° = ?
Given:
PCl₅(s) → PCl₃(g) + Cl₂(g) H°= +157 kJ
P₄(g) + 6Cl₂(g) → 4PCl₃(g) H° = -1207 kJ

A) -1835 kJ mol^-1
B) -1364 kJ mol^-1
C) -1050 kJ mol^-1
D) -1786 kJ mol^-1
E) -2100 kJ mol^-1