How many people have internet service other than PTCL?

In a town of population 100,000, 20% have internet connection. And those who have internet connection, 15% use PTCL internet service. How many people have internet service other than PTCL?

(A) 3,000
(B) 7,000
(C) 12,000
(D) 17,000

17,000

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