When a firm’s total revenue is at the maximum, marginal revenue is? by Sunday | Aug 5 | Economics WAEC | 0 comments A. at the maximum B. negative C. zero D. positive E. constant Correct Answer: Option C – zero Users Also Read These:In the theory of production and cost, the average…The relationship between the marginal revenue (MR)…What effect will an increase in price have on the…A market structure where profit is maximized when…When total utility is at maximum; then marginal utility is?