To prevent others from changing the formulas and formatting of a worksheet, you should use:

Which of the following statements about abstract superclasses is true?

a. abstract superclasses may contain data. b. abstract superclasses may not contain implementations of methods. c. abstract superclasses must declare all methods as abstract. d. abstract superclasses must declare all data members not given values as abstract.

A Word document can be converted into HTML without losing any aspect of the original document.

Answer the following statement true (T) or false (F)