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:What is the firm's marginal revenue?When the Total Product (TP) is at maximum point, the…One relationship between marginal utility and total…A firm with marginal cost equals to its marginal…If the fixed cost of a firm is 800.00 Naira and it's…