In a school of 850 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
A. 173
B. 163
C. 153
D. 143
44 + 28 + 10 = 82%
100 – 82 = 18%
850 * 18/100 = 153