What Is the Overall Standard Free Energy Change When the Following

What is the overall standard free energy change when the following two reactions are coupled?
A + B $\rightarrow$ C $\quad$ $\Delta$ G _rxn = $\Delta$ G₁
C+ D $\rightarrow$ E $\quad$$\Delta$ G11eed8bd_5dd2_ab4a_a0ba_097b88c7a998_TB6562_11 _rxn - $\Delta$ G₂

A) ( $\Delta$ G₁ + $\Delta$ G₂)
B) ( $\Delta$ G₁+ $\Delta$ G₂) .
C) ( $\Delta$ G₂ - $\Delta$ G₁)
D) ( $\Delta$ G₁ $\Delta$ G₂)
E) ( $\Delta$ G₁/ $\Delta$ G₂)