Every Year SC Johnson Gives Its Customers an Opportunity to Register

Every year SC Johnson gives its customers an opportunity to register on-line or through the mail to win $5,000 for a room makeover.This prize is awarded on Room by Room,a show on HGTV that SC Johnson sponsors.What has SC Johnson designed?

A) an annual loyalty incentive plan
B) an annual contest
C) an annual event sponsorship
D) an annual sweepstakes