Benrus Inc. designs and markets very high-end watches. Each watch model has its own unique features such as precious metal casings, shatterproof glass, worldwide tracking capabilities and functionality to depths of 200 meters in the ocean. These watches are designed primarily for successful men who are willing to spend between $30,000 and $50,000 on a watch; Which of the following is evident here?

A. Image differentiation

B. Channel differentiation

C. Service differeniation

D. Product differentiation

E. People differentiation