The lines that <span>support the idea that Macbeth does not want to tell his wife about Banquo's murder until after it has been done are the following:
</span><span>A."Be innocent of the knowledge, dearest chuck, / Till thou applaud the deed."
The lines mean - It's better for you not to know about this until you see the results.</span>
The clue word "however" almost always indicates a "contrast". This is because when using this word, the writer can on one hand agree with what he or she is saying, but offer a different point of view to be considered.
A. They add a bit of humor to a serious mood. The fact that she asked them to bring her back a job is just funny, so it is definitely A.
