Please help me with this problem for computer networks, thank you!

Consider two active nodes, A and B, on an ethernet with lots of frames to send. Each node tries to senod its first frame and they collide, send their jamming signal and calculate a back-off time in the interval 0,1] slots. Let A be the node that chooses a back-off time 0 and B chooses a back-off time of 1 slot (if botlh pick the same slot, they collide again). So A sends its first frame successfully and B decides to wait 1 slot. However during the next time slot when B tries to send its first frame, A also tries to send its second frame so they collide again. Answer the following questions 2 pts each: (a) After the last collision (A's second frame colliding with B's first frame), what are the back-off intervals (b) What is the probability that B wins over A and can send its first frame successfully? c) If A wins that round, do you think that B has a fair chance to win the next round? Explain why