In a Resting Muscle Cell at 37 ^$\circ$ C, What Is The

In a resting muscle cell at 37 ^$\circ$ C, what is the $\Delta$ G for the phosphorylation of ADP by creatine phosphate (CP) given the following concentrations: CP, 25 mM; ATP, 5 mM; ADP, 0.1 mM and creatine, 1 mM? creatine phosphate + H₂O $\rarr$ creatine + P_i $\Delta$ G ^$\circ$ ' = -43.1 kJ/mol
ATP + H₂O $\rarr$ ADP + P_i $\Delta$ G ^$\circ$ ' = -30.5 kJ/mol

A) +14.4 kJ/mol
B) +10.8 kJ/mol
C) -10.8 kJ/mol
D) -14.4 kJ/mol
E) none of the above