It is marginal cost. <span>the marginal cost is the cost of making one more, and the marginal benefit is the price received from selling one more.</span>
The marginal cost of production is the change in total production costs from making one additional unit of a particular product. In this case, it would be one additional cell phone. Analyzing the marginal costs is important for companies and businesses as it allows them to discover at which point they will be able to optimize production and overall operations.
