Modify the Category form by changing the sales markup text box control to a combo box control

Question:

Modify the Category form by changing the sales markup text box control to a combo box control that lists choices of 100%, 125%, 150%, 175%, and 200%. Format the text box control to a percent format with decimal places = 0. Save the form as Ch 12 Assignment 3. Print the documenter page that documents the combo box for Sales Markup