Case-Based Critical Thinking Questions Case 1 - MaidToOrder

Case-Based Critical Thinking Questions Case 1 - MaidToOrder
The database for a cleaning service company contains the following table, named tblCustomer, that includes customer invoice data. The InvoiceNum, CustomerNum, and InvoicePaid fields contain text. The InvoiceDate field contains dates. The InvoiceAmt field contains numbers.
Which of the following statements will calculate a total for all of the unpaid invoices?

A) Dim decTotalUnpaid = Aggregate customer In CustomerDataSet.tblCustomer
Select customer.InvoicePaid Into Sum()
B) Dim decTotalUnpaid = Aggregate customer In CustomerDataSet.tblCustomer
Select customer.InvoiceAmt Into Sum()
C) Dim decTotalUnpaid = Aggregate customer In CustomerDataSet.tblCustomer
Where customer.InvoicePaid.ToUpper = "N"
Select customer.InvoiceAmt Into Average()
D) Dim decTotalUnpaid = Aggregate customer In CustomerDataSet.tblCustomer
Where customer.InvoicePaid.ToUpper = "N"
Select customer.InvoiceAmt Into Sum()