41 If price increases are NOT permitted, what should the travel agency invoice to the customer state? REtiMmZEU3J5aXoySTFaeFRSVG5RZ209 a. That no price increases are permitted after the customer has paid in full b. O That price increases are not permitted c.O That if the total price is increased by more than 7%, the customer has the right to cancel and ob d. O That 30 days notice must be provided if the price is increased