This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts. A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B. Express the propagation delay, d_prop, in terms of m and s. Determine the transmission time of the packet, d_trans, in terms of L and R. Ignoring processing and queuing delays, obtain an expression for the end-to-end delay. Suppose Host A begins to transmit the packet at time t = 0. At time t = d_trans, where is the last bit of the packet? Suppose d_prop is greater than d_trans. At time t = d_trans, where is the first bit of the packet