Shenshen Zhongxing Telecom (ZTE) is a Chinese company that is the only telecommunications company in China that produces and markets an inexpensive camera phone to sell to middle class Chinese living in urban areas. Because ZTE targets a single segment within a limited geographical area, it can be said to have a(n):________

a. Promotional emphasis
b. Niche competitive advantage
c. Relationship building advantage
d. Comparative advantage
e. Differential competitive advantage