Option 1 is correct because Boo is a superclass of Bar. Option 2 is correct for obvious reasons. Option 3 is incorrect because Bar is a subclass of Boo.
Hope the explanation is enough!
SCBCD5, SCWCD5, SCJP5
"Even if you're on the right track, you'll get run over if you just sit there."
These are not the droids you are looking for. Perhaps I can interest you in a tiny ad?
a bit of art, as a gift, that will fit in a stocking