In a recent annual report, apple computer reported the following in one of its disclosure notes: "warranty expense: the company provides currently for the estimated cost for product warranties at the time the related revenue is recognized." this note exemplifies apple's use of: economic entity. realization principle. conservatism. the matching principle.

The matching principle

Explanation: Matching principle is a combination of accrual accounting and revenue recognition. It states that the expenses of a company must be recorded at the same accounting period in which they were incurred to earn such revenues.

In the given case, Apple is reporting the warranty expenses at the same time period in which the revenue from such expenses is recognized.

Hence we can conclude that the given case illustrates the matching principle.