LaDanian Is Sniffing Some Traffic and Notices a Frame That

Multiple Choice

LaDanian is sniffing some traffic and notices a frame that is sent with the source MAC address of:
02:1D:45:68:AF:D4.
This is what he thinks is weird. Why?

A) The first bit of the first byte is not set, which indicates this frame is multicast
B) The first bit if the fist byte is set, which indicates this frame is multicast
C) The second bit of the first byte is set, which means this is a virtual machine interface
D) The second bit of the first byte is set, meaning the MAC address has been assigned locally