Consider a three hop network from the source to the destination. Let m be the message transmission time at each hop. Let n be the propagation delay of each hop. Assume there is no queueing delay and processing time at each hop. Based on cut-through switching, What is the total time for three packets to be transmitted to the destination?
1) 3m + 3n
2) 5m + 3n
3) 9m + 9n
4) None of the above