For each of the following situations, determine whether the criteria for revenue recognition have been met by December 31, 2018.

a. A manufacturing company received \(\$ 85,000\) cash on December 31,2018 , as an advance payment on a special order for a piece of equipment. The equipment will be manufactured by March 31 , 2019.

b. An appliance dealer acquired ten new washer/dryer sets for \(\$ 6,800\) cash on December 31,2018 , and advertised their availability, at \(\$ 1,000\) for each set, in that evening's newspaper.

c. A yard maintenance service signed a contract on October 15, 2018, with an apartment complex to maintain its grounds during the months of November 2018 through June 2019. The cost is \(\$ 750\) per month and payment is due in two \(\$ 3,000\) installments: December 15, 2018 and March 15, 2019.