Estimating and recording product warranty expense in the period of the sale best follows the

A) cost concept
B) business entity concept
C) matching concept
D) materiality concept

Estimating and recording product warranty expense in the period of the sale best follows the matching concept, which requires expenses to be recognized in the same period as the revenue they help to generate. The warranty expense is directly related to the sale of the product, so it should be recognized in the same period to match the revenue. This approach allows for more accurate matching of expenses with the revenue they help to generate, which is a critical aspect of determining the profitability of the business.