Answered "Hello Selma North Carolina!" and was met with blank silence, the kind with a muted boiler room rotary, then a dropped call.  Caller ID is "Selma NC" and number is a non-fixed VoIP, i.e. pocket phone with WiFi or network jack (Skype or Google Voice phone), often used as part of a briefcase boiler room that can be set up (and packed back up) in a few minutes in a hotel room.  Selma, NC is about 30 miles SE of Raleigh off IH 95 where it intersects US 70.

Answers welcoming the city named in the caller ID often are not routed by boiler room dispatchers to an operator.  Other answers that are effective in avoiding scammers, if the caller ID is not a city name, are "Federal Trade Commission, how may I direct your call?" and "Speak up, were' dumb as a box of rocks and we have a LOT of money!" etc.  If people want to sell you solar power and ask if you own your own home, say that no, you rent an apartment in a high-rise.  Whatever you do, NEVER SAY "YES" and never "press x to...", either of which can be taken as permission for... whatever.