In a Biochemical Reaction, a + B $\rightarrow$ C With $\Delta$ G _rxn = 30 KJ/mol

In a biochemical reaction, A + B $\rightarrow$ C with $\Delta$ G _rxn = 30 kJ/mol.Which of the following reactions might be effectively coupled to this reaction so that it becomes more spontaneous?
I.C + D $\rightarrow$ B + E $\quad$ $\Delta$ G11eed8bc_7201_40f9_a0ba_bb7e9d9ada91_TB6562_11 _rxn = -40 kJ/mol
II) C+ D $\rightarrow$ B + E $\quad$ $\Delta$ G 11eed8bc_7201_40f9_a0ba_bb7e9d9ada91_TB6562_11 _rxn = +40 kJ/mol

A) I only
B) II only
C) I or II
D) Neither I nor II can increase spontaneity.
E) No coupling is required, as the reaction is already spontaneous.