I need help with these problems. thank you.

The following events happened at Audit Inc. about accounting service with a customer March 5, 2019 Audit Inc. was contacted by a customer about accounting services March 9, 2019 The customer signed a contract about the details of the service. March 14, 2019 The company received cash in advance from customers $6.000 March 18, 2019 Audit Inc. provided the accounting service. Under accrual basis accounting, what is the appropriate day to record the revenue related to the accounting service? . March 5, 2019 OB. March 18, 2019 . March 14, 2019 O D. March 9, 2019 The following events happened at Audit Inc. about accounting service with a customer. December 1, 2019 December 12, 2019 December 15, 2019 December 20, 2019 Audit Inc. was contacted by a customer about accounting services The customer signed a contract about the details of the service. The company received cash in advance from customers $6,000 Audit Inc. provided the accounting service. Under cash-basis accounting, what is the appropriate day to record the revenue related to the accounting service? December 1, 2019 . . December 15, 2019 December 20, 2019 OD. December 12, 2019