Url Change

Helo sir,
My main site addres is (A), I install wordpress in (www.A.com/B) ,I install add-to-any plugin, When i share something from (www.A.com/B)to facebook, One person see that post in facebook & he Click on that post i need to redirect to My Main site (A), No need to go (www.A.com/B) Possible? How?

http://wordpress.org/plugins/add-to-any/