TBS Bikes has recently introduced a series of bikes called Surami. The core positioning of TBS Bikes is "speed". Surami is a five-gear bike and apart from speed, the company promises to include other features such as safety, good performance, and pollution control features. This describes the ________ of the bike.
A) total customer cost
B) customer-perceived value
C) value-delivery system
D) value proposition
E) total customer benefit
Answer: D