I dont have a clue but i do know what options mean. Options mean one like if you pick this option or an other thats all i know
What does Optional Referrer
The math question was optional, but every one did it.
Something that you don't have to buy but if you do want to buy, it costs extra. Everything has options - you can opt in or opt out.
prices accessory products that are offered with the main product is called optional pricing for ex.. car accessories