Hello!
You can use
options with price modifiers or
product variants.
The difference between the features is that X-Cart 5 tracks variants as individual stock-keeping units having their own SKUs, prices and stock levels.
This may not work if you want all the options to be treated as the same stock-keeping unit.
Options do not create multiple stock-keeping units, but you have to use price surcharges (fixed or percentage) and can't set fixed prices for different variants.