Gamebox, a seller of video$-$gaming systems, games and online gaming subscriptions, recently made available a coupon that allows its gaming subscription members to extend their subscriptions by three months at no charge. Subscribers need only to login to the website using their user name and password and provide the coupon code. Because this contract modification $($from $12$ months to $15$ months$)$ does not add distinct goods or services from the original contract, Gamebox need only make a cumulative catch$-$up adjustment.

True or False