Just I need answer for A,B,C or D Not need for explanation

In uncertain circumstances, the conservatism principle guides accountants to a. recognize expense of prepaid items when payment is made. b. accelerate revenue recognition and delay expense recognition. c. delay both expense recognition and revenue recognition. d. accelerate expense recognition and delay revenue recognition. Which of the following events would not require an end-of-year adjusting entry? a. Each of these answer choices would require an end-of-year adjustment b. Providing services on account c. Purchasing supplies for cash d. Paying for one year's rent on July 1