Answer: E. marginal cost is just less than or equal to marginal revenue.
Step-by-step explanation:
In order to maximize profits when it comes to production, it is best to do so at a quantity where Marginal cost is equal to Marginal revenue or at least slightly lower but not higher.
At this quantity, all available resources are being used efficiently and so profit is being maximised because if Marginal costs exceed marginal revenue, this will result in losses.
Randy Todd should therefore produce the racquets at a point where marginal cost is just less than or equal to marginal revenue.