Kaleb Carlson is the Vice-President of Finance at Wok & Roll, a manufacturer of pre-seasoned commercial woks. In Wok & Roll's annual report for FY 2020, Mr. Carlson reported the following in a disclosure note to a financial statement:

"With respect to warranty expenses, Wok & Roll provides currently for the estimated cost of product warranties at the time the related revenue is recognized."

This note exemplifies Wok & Roll's use of:

(a) conservatism;

(b) the economic entity assumption principle;

(c) the matching principle;

(d) the matchmaking principle; or

(e) management discussion and analysis