ChatGPT

Consider the following concurrent tasks, in which each statement executes atomically. Within a task, the statements occur in order. Initially, the shared variables x and y are set to $1.$ Task $0$ x$=2$ a$=$x$/$y Task $1$ y$=2$ b$=$x$*$y At the end of the concurrent tasks, the values of a and b are examined. Which of the following must be true? $("$implies$"$ is used here to indicate a logical implication. One or more answers may be correct$)$ Pick ONE OR MORE options

$($b$==4)$ implies $($a$==1)$

$($a$==1)$ implies $($b $==4)$

$($b$==2)$ implies $($a$==1)$

$($ a$==2)$ implies $($b$==4)$

None of the above