What is Lady Macbeth's role in Macbeth's decision to murder the king?
A. She tries to talk Macbeth out of killing the king by explaining that she is a mother and is against killing.
B. She calls Macbeth silly for believing the witches' prophecy and tells him to be happy with what he has.
C. She tells Macbeth that the king is old and dying and it would be right to put him out of his misery.
D. She talks him into killing the king by accusing Macbeth of being weak and cowardly.

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