An account manager should recommend a wide-area network (WAN) solution that includes universal gateways to a potential customer that _____.
A.
requires mobility for offsite personnel who work at local client locations
B.
requires collaboration between project teams at different locations around campus
C.
requires flexibility for remote workers who connect to the company from their homes
D.
has enterprise branch offices that must connect to the Internet over the Public Switched Telephone Network (PSTN)