Which of the following is NOT a measurement unit for the values of padding and margin properties?

If a user enters a value in the text box of an editable combo box and the value is NOT in the list, what will the method getSelectedIndex return?

A) The index of the item that the user replaced B) The index of the item the user entered C) -1 D) 0, since the item is not in the list

A read message is displayed with an open envelope icon and is not ____________________.

Fill in the blank(s) with the appropriate word(s).