$3.$ When considering the $4-$Way Handshake that is used to create dynamic encryption keys, what is the main difference between $802\mathrm{.}1$X$/$EAP and PSK authentication?

A$.802\mathrm{.}1$X$/$EAP supplicants all use the same PMK$.$

B$.$ Clients that use PSK authentication all use the same PTK$.$

C$.802\mathrm{.}1$X$/$EAP supplicants all use a different PMK$.$

D$.$ Clients that use PSK authentication all use a different PTK$.$