Which sentences in the passage are true concerning a function?

A spreadsheet function takes values in the form of arguments, performs a calculation, and returns a result. All spreadsheet functions start with the hash sign (#). The arguments go inside angle brackets, < and >, and are always separated by colons (:). Instead of specifying constants as arguments, it generally makes more sense to use cell references. You can even specify a range of cells by using a comma (,) in place of a colon (:).