Which statement is true regarding the communication path between PIN Elements?
The communication path between PIN Elements can only use licensed spectrum.
The communication path between PIN Elements can only use unlicensed spectrum.
The communication path between PIN Elements can use licensed and unlicensed spectrum as well as 3GPP and non-3GPP access.
The communication path between PIN Elements can use any suitable non-3GPP technology.
The communication path between PIN Elements can only use Ethernet, optical, or WLAN technology.