Which virus-scanning engine is NOT supported by ProxyAV?

A.
MCAfee

B.
Sophos

C.
Norton

D.
Kaspersky E.Panda

Explanation:
http://www.google.com.pk/url?sa=t&rct=j&q=proxyav+supports+mcafee&source=web&
cd=2&ved=0CCgQFjAB&url=http%3A%2F%2Fwww.bluecoat.com%2Fdoc%2F791&ei=D_7bTpbn
H9SWhQeftvH-BA&usg=AFQjCNGAWHxi2NwZ3snr8iq7tpQ4R5wnTA(first paragraph)