What Is NOT True Regarding an Invoice in QBO

What is NOT true regarding an invoice in QBO?

A) Invoices are only used to recognize sales to customers for products versus services.
B) An invoice is used to record sales when the customer will pay later.
C) An invoice contains detailed information about the products and services to a customer.
D) To create an invoice,use the Create (+) icon and select Invoice.Then select Customer and select vendor or Add New Customer.