For each of the following economic events determine whether the event is a business transaction on the

date it occurs and whether it's recognized in the accounts on that date.Support your answer.

a On July 15, the controller of Kona Corporation orders a custom display case for the company's store.

b. On July 31, a new administrative assistant is hired at a monthly salary of $3,500.

c. On July 31, the controller of Kona Corporation receives a bill for electricity for the month of July.The bill is due on August 18 and will be paid on that date.