All options can be reference inside of Option Set Calculations and Option formulas.
You can insert references to Options by using the Calculation Variables dropdown located above Option formulas and Option Set Calculation fields.
You don’t need to use the Add Calculation Variable dropdown to insert and reference an option value. You can also add a reference manually by using its unique name. An options unique name is found on the edit option page.
For further info about option variables see Option Set Calculations