State Machine C decomposes into State

Machines A and $B$ arranged as a side$-$

by$-$side composition with interleaving

dynamics. Machine $C$ receives

inputs $x,y,$ and $z.$ Machine A receives

inputs $x$ and $y$ and Machine $B$ receives

inputs $y$ and $z.$ Machine $C$ is UNSAFE

because it might... $($choose all that are

correct$)$

Fail to react to input $x$

Are you kidding? The machine is safe and

will react appropriately to all inputs at all

times

Fail to react to input $z$

Fail to react to input $y$