At the maximum point of the total product curve of a firm; marginal revenue is? by Sunday | Oct 28 | Economics JAMB | 0 comments A. decreasing B. increasing C. constant D. zero Correct Answer: Option D – zero Users Also Read These:The relationship between the marginal revenue (MR)…In the theory of production and cost, the average…When a firm's total revenue is at the maximum,…The elasticity of demand for a firm's product is 2.…What effect will an increase in price have on the…