Right choice is (c) product
Explanation: Product inhibition is case of competitive inhibition, where the substrate and the inhibitor compete for the active site of the enzyme. The inhibitors in this case bear structural similarity to the substrate. This causes substantial loss of productivity and hence the rate equation can be given by \(V=\frac{V_{max} [S]}{K_m (1+\frac{[P]}{K_p})+[S]}\)
Where,
Km = Miachelis Menton constant, Kp = Dissociation constant for product, P = Product concentration and S = Substrate concentration.