Refer to the network shown below with three nodes. A $1500$ bytes message is broken up into

four $375$ bytes packets and sent from A to C via B in a pipelined manner. Also, each packet has a

$40$ bytes header. Note that A sends out the data packets sequentially without waiting for the

ACK from $B,$ and $B$ has to receive the complete $(375+40$ bytes$)$ packet from A before relaying it

to $C.$ If node A starts transmitting the first packet at time $t=0,$ calculate the time at which node

$C$ receives the full message. Assume $c=2{10}^8\frac{m}{s},$ and ignore processing and queuing delays

$($use transmission and propagation delays only$)$