A consumer is deciding how to allocate their budget between apples and oranges after the price of oranges increases. If the marginal utility of the fourth apple is 5 and the marginal utility of the fourth orange is 10, which of the following classification best describes the consumer's optimal consumption choice?

When a consumer decides how to spend their money on apples and oranges, they want to get the most satisfaction, or utility, from their purchases. The marginal utility is the extra satisfaction gained from consuming one more unit of a product. In this case, the consumer gets a utility of 5 from the fourth apple and 10 from the fourth orange. Since the marginal utility of the orange is higher, the consumer should buy more oranges to maximize their satisfaction. Therefore, the optimal consumption choice in this situation is to allocate more of their budget toward oranges rather than apples.