政大研究所的閱讀測驗，有字義問題求解
文章：
(前段略，大意在講美國人口密集度較其他國家低)
Contrary to widespread beliefs, high population density is a value
not a disvalue. High population density intensifies the division of labor,
which makes possible a wider variety of jobs and specialized consumer products.
For instance, in Manhattan, there is a "doll hospital" a store specializing in
the repair of children's dolls. Such a specialized, niche business requires
a high population density in order to have a market. Try finding a doll hospital in Poughkeepsie. In Manhattan, one can find a
job as a Pilates Method teacher or as a "Secret Shopper" (two jobs actually
listed on Craig's List). Not in Paducah.
People want to live near other people, in cities. One seventh of England's
population lives in London. If population density is a bad thing,
why are Manhattan real-estate prices so high?
問題
What does "niche" probably mean in the context?
(A)of a religious denomination (B)of a special kind
(C)of a small size (D)of some significance
我的選擇是(C)，朋友的選擇是(B)
因為niche本義是指小神龕，在本文中，niche前面以經出現過specialized
查了劍橋字典也是偏向指小規模的意思
但是查了牛津字典，又有表示專門的意思
所以想請版友協助。應該要選擇B或是C呢?