Q12). Consider the following statments.
$S1$ : A thread running in critical section may get context switched .
$S2$ : Hardware access to devices is usually unavailable in user mode.
$S3$ : Modification to page tables are only possible in kernel mode,
Which of the above statement are correct?
a). $S1,S2$
b). $S2,S3$
c). $S1,S3$
d). $S1,S2,S3$
Is the statement S1 correct?? ans given is D but according to me it should be B