What is the return value ($?) of this code:

os = Unix
[$osName = UnixName] && exit 2
[${os}Name = UnixName] && exit 3

A. countw B. wcount C. wc D. count p E. None of the above

A. dm B. rm C. delete D. erase E. None of the above

A. rdir B. remove C. rd D. rmdir E. None of the above

A. x B. y C. a D. z E. None of the above