I need the answer as soon as possible

speed of propagation of a signal along a cable is 2 x 10 m/s and network has 10 Mbps CSMA/CD network interconnecting ten computers shown in belon image. Each computer is connected to the hub with a cable of different length. Computer Hy is connected via a 100 m cable, computer Hy via a 200 m cable, computer Hy via a 300 m cable and so on upto computer tho which is connected via a 1000 m cable (ignore the requirement of repeater due to signal degradation). Assume that the hub introduces a delay of 2.5 microseconds. What is the shortest packet length Lmin of this network in order to ensure that the CSMA/CD protocol functions properly? H, H 200 m 100 m 1000 m Hub