$4.$ The IEEE $802\mathrm{.}11-2012$ standard requires an authentication and key management protocol $($AKMP$)$ that can be either a preshared $($PSK$)$ or an EAP protocol used during $802\mathrm{.}1$X$/$EAP authentication. Which of the followings is NOT a nick name for PSK authentication?

A$.$ Wi$-$Fi Protected Setup

B$.$ WPA$/$WPA$2-$Personal

C$.$ WPA$/$WPA$2-$PSK

D$.$ WPA$/$WPA$2-$Preshared Key