When a buyer pays a premium to the payment of the premium that the buyer is not bound to a contract. But having the right to exchange currency in which they took it.
When buyers choose to pay interest payments of the premium that the buyer will have no obligations in the contract, but has the right to exchange the currency for the price agreed.
When you purchase the Premium Payment Options payment of the premium will be selected by the Buyer has no obligation to contract, but has the right to exchange currency at a price agreed.