Elucidate the advantages of saving formulas as variables? Please choose the correct answer.

Elucidate the advantages of saving formulas as variables? Please choose the correct answer.
A . Use as options available in the Format and Report Element toolboxes
B. You can reuse the formula without having to enter it each time
C. Create the formulas and feed it with all its dimensions
D. Use variables in any report within the document

Answer: C