What value will be printed?
code snippet image (Assume necessary headers are included)
This code will always print 3, because the thread t is started before the value of y is modified.
This code won’t compile.
This code will always print 7, because the thread t is joined after both modifications of y.
This code will print 3, 6 or 7 (depending on thread scheduling by the operating system)
This code has undefined behavior.