In the ________ numbering system, each place value digit is ten times greater than the digit to its right

All of the following statements are TRUE regarding custom data validation EXCEPT:

A) Custom validation allows you to specify more complex criteria than allowed with the other validation types. B) Data validation is an excellent tool to use in workbooks where you want to restrict data entry to certain values or ranges of values. C) There may be times when data validation rules can hinder data entry rather than enhance it. D) Using custom validation, you can apply multiple criteria one at a time.

If the user clicks either the Cancel button in the dialog box or the Close button on the dialog box's title bar, the InputBox function returns ____.

A. an empty string B. the value contained in the input area of the dialog box C. CancelValue D. nothing