If A $\rightarrow$ B $\rightarrow$ C $\rightarrow$ D $\rightarrow$ E Represents a Metabolic Pathway,then Letter E Would Be
A)a

If A $\rightarrow$ B $\rightarrow$ C $\rightarrow$ D $\rightarrow$ E represents a metabolic pathway,then letter E would be

A) a substrate.
B) a product.
C) energy.
D) an enzyme.
E) an enzyme-substrate complex.