In the Advanced options for the Firewall service in OS X, you select “Block all incoming connections.” As a result, _______.

A.
the Mail application on your computer will no longer receive incoming messages from a mail server

B.
files on your computer that are shared using Personal File Sharing will be inaccessible to users on the network

C.
your computer will NOT be able to obtain an IP address from a DHCP server

D.
file servers on your local network will not be visible in the Finder’s network browser