Which regex expression is the correct format for redirecting the URL http://www.example.com?

Which regex expression is the correct format for redirecting the URL http://www.example.com?
A . www.example.com
B. www.example.com
C. wwwexamplecom
D. www/.example/.com

Answer: B

Explanation:

Reference: https://learn.akamai.com/en-us/webhelp/edge-redirector/edge-redirector-guide/GUID-0C22DFC2-DCC4-42AF-BDB2-9537FBEE03FD.html