What is the main difference between a formula and a function in spreadsheet software?

Select one:

A$.$ A function is more accurate than a formula for calculations.

B$.$ A formula is a user$-$defined calculation that can combine operators and cell references, while a function is a pre$-$built operation provided by the software.

C$.$ A function requires no input, while a formula always requires cell references.

D$.$ A formula is used only for mathematical operations, while a function is used only for text manipulation.