Consider the following statements :
A. High speed Ethernet works on optic fiber.
B. A point to point protocol over Ethernet is a network protocol for encapsulating $PPP$ frames inside Ethernet frames.
C. High speed Ethernet does not work on optic fiber.
D. A point to point protocol over Ethernet is a network protocol for encapsulating Ethernet frames inside $PPP$ frames.
Which of the following is correct ?
- $A$ and $B$ are true; $C$ and $D$ are false.
- $A$ and $B$ are false; $C$ and $D$ are true.
- $A, B, C$ and $D$ are true.
- $A, B, C$ and $D$ are false.