Which of the following statements formats the contents of the txtSalesTax control with a percent sign and two digits to the right of the decimal?a) txtSalesTax.Text = Format(txtSalesTax, "Percent")b) txtSalesTax.Text = Format(txtSalesTax, "Fixed")c) txtSalesTax.Text = Format(txtSalesTax.Text, "Percent")d) txtSalesTax.Text = Format("Percent", txtSalesTax.Text)