Which of the following is the most correct regarding ethernet frames?
a. As an ethernet frame is passed from point-to-point, it remains totally unchanged.
b. As an ethernet frame is passed from point-to-point, only the source MAC address is changed.
c. As an ethernet frame is passed from point-to-point, only the destination MAC address is
changed.
d. As an ethernet frame is passed from point-to-point, both the source MAC address and the
destination MAC address changed.