Consider the concurrent program that consists of the following two processes that share the variable x:

P$1$: x $=3$; P$2$: x $=4$; x $=$ x $*2$; if$($x $==4)$ x $=$ x $+6$; else x $=$ x $*2+5$;

What are the different values that the variable x$$can have when the program terminates successfully?

Question $4$Select one:

a$.$

$6,10,12,14,17,18,20,21,22$

b$.$

$6,10,17,22$

c$.$

$4,6,10,12,16,20,21,22,23$

d$.$

$6,10$

e$.$

$6,10,17,21,22$

f$.$

$6,10,12,16,17,20,21,22,23$

g$.$

$4,6,10,12,16$