John is attempting to use Handoff with his recently updated iPhone and Mac. He does not see the Handoff icon for the app he is using appear in macOS.
What troubleshooting step should John try first?
A . Verify that both devices are connected to a Wi-Fi network using WPA2 security.
B . Verify that iPhone Cellular Calls are turned on in System Preferences > Network.
C . Verify that both devices have Wi-Fi turned on.
D . Reset Network Settings on iPhone.