$.$The diagram below shows a logic gate implementation of a device that accepts a single control

bit $C$ along with $4$ data inputs $N3$ through N$0.$ The device outputs $8$ bits $x7$ through X$0.$

Complete the table below to show the $x$ outputs generated by the device in response to the $C$ and

$N$ inputs shown below. Indicate $0$ or $1$ for each of the output bits $x7$ through $x0$ and give proper

explanation.