Which of the following is a private class B IP address?

Which of the following is a private class B IP address?

A.
10.0.15.1

B.
172.16.0.1

C.
172.33.1.1

D.
192.168.1.1

Explanation:

http://www.sqa.org.uk/e-learning/WebTech01CD/page_12.htm