Is the following statement true or false?With reference to the Amazon Flexible Payment Service - once you subscribe to the caller notification using the SubscribeForCallerNotification operation - you cannot unsubscribe the notification service.

Practice this Upwork Skill Test. Freelancers take skill tests on Upwork to show their skills to potential clients and to make themselves more marketable. Upwork suggests you take as many tests as you want -  your skills are shown on your Upwork profile page.