$4.(20\%)$ This problem is related Memory Consistency. Consider the following code segments executed by three threads.

Thread P$1$

Therad P$2$

Thread P$3$

a $=1$

print$($b$,$c$)$

$0=1$

C$=1$

print $($a$,$c$)$

print $($a$,$ b$)$

Assume that initially all variables are set to zero. Consider that we are using Sequential Consistency.

a$).$ Is it possible to see an output of $11$ print$($b$,$c$)$

$11$ print$($a$,$c$)$

$11$print$($a$,$b$)$

printed by the $3$ print statements?

If this is possible, show an interleaving of the instructions from the $3$ threads that produces this

output.

b$).$ Is it possible to see an output of $01$ print$($b$,$c$)10$ printa,c$)00$ print$($a$,$b$)$

If this is possible, show an interleaving of the instructions from the $3$ threads that produces this output.

c$).$ Show at least $3$ possible correct outputs that are possible using Sequential Consistency.