BUSINESS QUESTION----can you please answer.?

Shenshen Zhongxing Telecom (ZTE) is a Chinese company explicitly the solitary telecommunications company surrounded by China that produces and market an inexpensive camera phone to supply to middle class Chinese living in urban areas. Because ZTE target a single segment inwardly a controlled geographical nouns, it can be said to own a(n):
a. promotional emphasis
b. niche competitive advantage
c. relationship building advantage
d. comparative advantage
e. differential competitive advantage

Answers:
Hmmm I don`t know should bear another clsss if you cannot do your own homework!
The answer is B
d

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