Consider sending a single message of 10,000 bytes from a sending host to a receiving host with three intermediate routers. assume that the message will wait for two other same size messages to finish transmission at each intermediate router. also assume that the total distance between the sender and the receiver is 1000 km (0.3 km/μsec) and the transmission capacity is 10 mbps along the path. calculate the time from the first bit being sent out from the sender and the last bit received by the receiver. specify clearly any assumption made in your calculations