Edith Wharton Should be the answer to your question
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He worries<span> that Banquo </span>will<span> be suspicious of Duncan's murder so he decides to kill Banquo and his son Fleance in order to ensure that none of Banquo's people take the throne after him. He doesn't want people to know that hes guilty of killing the king.</span>
A is the correct answer because the look of the needle is not as important as the other ones