Stamps.com offers at$-$home postage and mailing for a monthly fee. Customers are able to carry a balance on their accounts that allows them to mail packages and letters as long as there is a balance in their account.

Stamps.com has a button on its program that carries this logo$,"$To purchase postage, click here." Following that click, another window pops up that reads, "You are about to purchase postage. Once you click 'Okay' below, you cannot change this transaction." Why does

Stamps.com have the second pop$-$up button?

The pop$-$up button is simply a courtesy for its customers.

The pop$-$up button is necessary to show acceptance of the terms.

The pop$-$up button is required under the UCC.

The pop$-$up button is required under common law.