Vista Company, an Internet Service Provider, Has 2,000,000 Customers

Vista Company, an internet service provider, has 2,000,000 customers. The customers make electronic payments of $420 each for that month's service on the last day of each month. Buena Company does not send any bills to their customers.
The company's journal entry on the day they receive the payment will include:

A) A debit to Internet Service Expense for $840,000,000
B) A credit to Internet Service Revenue for $840,000,000
C) A debit to Accounts Receivable for $840,000,000
D) A credit to Accounts Receivable for $840,000,000