Question $3.$ Answer the following two questions based on the code provided below.

Assume the code has been compiled and executed.

A$.$ Assuming fork$()$ never fails, how many times will the message $$Hello$!$

$$ be

displayed?

a$.2$

b$.3$

c$.4$

d$.6$

e$.$ None of the above

B$.$ What will be the largest value of $$a$$ displayed by the program?

a$.$ Due to race conditions, $$a$$ may have different values on different runs of

the program.

b$.2$

c$.3$

d$.5$

e$.$ None of the above