Answer:
A) Expense recognition principle: expenses are recorded in the accounting periods at which they are consumed.
B) Time period principle: companies should report their operations over a standard period of time.
C) Revenue recognition principle: revenue should only be recognized when the company has substantially completed the earnings process. In this case the surgeon has completed the earning process, i.e. the surgery, so he/she should record the revenue.
D) Revenue recognition principle: revenue should only be recognized when the company has substantially completed the earnings process. construction companies use two methods to record revenue: percentage of completion (PC) method and completed contract (CC) method.
E) Expense recognition principle: expenses are recorded in the accounting periods at which they are consumed. The expenses has to be recorded this year.