Which statement explains the logic of the profit-maximization rule for a perfectly competitive firm?

Question

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The profit-maximization rule for a perfectly competitive firm is to produce up to the point where marginal revenue (MR) equals marginal cost (MC). This means the firm should produce every unit of output for which the additional revenue (the price, in perfect competition) exceeds the additional cost of producing that unit, thereby maximizing profit. This is because, in perfect competition, firms are price takers and can sell as much as they want at the market price, so the additional revenue from selling one more unit (the marginal revenue) is equal to the market price.

Which Statement Explains the Logic of the Profit-Maximization Rule for a Perfectly