Click to see additional instructions A. Hosts A and B both have 1 frame to send on an Ethernet channel that uses binary exponential backoff. Both hosts sense the channel at the same instant in time. The probability of a collision in this first (0th) contention period is: B. A and B still have 1 frame as above, and just collided. The probability of a collision in the next (1st) contention period is: C. A and B collide again. The probability of a collision in the next (2nd) contention period is