The purpose of the ____ tool is to verify that an entry passes the specified validation logic.

Assuming that x and y are equal to 3 and 2, respectively, after the statement x -= y executes, the values of x and y will be:

a. x: 5; y: 3 b. x: 3; y: -1 c. x: 3; y: 5 d. x: 1; y: 2

The syntax ____ assigns either the value entered in thetxtSalescontrol (converted to Decimal) or the number 0 to the third element in thedecSalesarray.

A. Decimal.TryParse(txtSales.Text, decSales(3)) B. Decimal.TryParse(txtSales.Text, decSales(0)) C. Decimal.TryParse(txtSales.Text, decSales(2)) D. TryParse(txtSales.Text, decSales(1))