Consider the figure below. Assume the three hosts $,$ and $C)$ start to transmit packets of $3000$ bytes at the same time towards Router B$.$ Suppose the link rate between the hosts and Router $A$ is $4$ Mbps $.$ The link rate between Router A and Router $B$ is $1$ Gbps $.$ There are propagation delays in the links between the Hosts and Router $A$ of $6,2,$ and $4$ ms $.$ Router A and Router $B$ have queuing delays of $12$ ms and $7$ ms respectively. Propagation delay between Router A and $B$ is $6$ ms $.$ What is the total nodal delay end$-$to$-$end?

Host A

Host B

Host C