Choose correct answer. Explain

1.2. CSMA/CD. In a CSMA/CD network we require TRANSP >2PROP because: a) PROP is the round-trip time from a source to the destination and back again. Therefore, it must be ,K b) Otherwise, the signal would degrade too much along the wire making it difficultto detect c) The sender needs to unambiguously determine that a packet encountered a collision before it d) In any network (regardless of whether we use CSMA/CD or not) the transmission time of a at least twice the one way propagation delay collisions. finishes transmitting the packet. packet is a function of both the data rate, and speed of propagation along the wire