While traveling in India, Sabina notes all of her daily expenses in rupees in her spreadsheet. At the end of the day, she wants to see how much each expense was in U.S. dollars. Which is the quickest way she can convert the currency values?

(a) use the Auto Fill feature to convert the currency
(b)multiply or divide each expense using a formula in the spreadsheet
(c)multiply or divide each expense using a calculator