Rubisco catalyzes which of the following reactions?
a. $\mathrm{CO}_{2}+$ ribulose 1,5-bisphosphate $\rightarrow 2,3$ -phosphoglycerate
b. $\mathrm{HCO}_{3}{ }^{-}+$ acetyl-CoA $\rightarrow$ malonyl-CoA + NADPH $\triangle 3$ -hydroxypropionate
c. $\mathrm{H}_{2} \mathrm{~S}+$ light $\rightarrow \mathrm{S}^{0}+2 \mathrm{H}^{+}+2 \mathrm{e}^{-}$
d. Ribulose-1,5-bisphosphate $+\mathrm{CO}_{2}{ }^{-} \rightarrow$ Fructose- 1,6 -bisphosphate
e. 2 -carboxy-3-ketoarabinitol-1,5-bisphosphate $\rightarrow$ G3P