5. CSMA/CD Exponential Backoff We discussed in class the that CSMA/CD has three states. If you don't remember, refer to the Figure 4.5 on page 269 of the online Tannenbaum book OR in the class notes. a. Name and describe each of the 3 states in CSMA/CD b. Give a brief description of the Exponential Backoff algorithm: After a collision, the contention period is divided into slots. Stations randomly choose a slot for the time to back off from transmission. Slot 0 means transmit again immediately. c. After one collision, how many slots are there to choose from? d. After two collisions e. After five collisions