"I canot say whether any diseased affection of the heart caused her lips to be parted as if she were panting, and her face to bear a curious expression of suddennes and flutter; but I know that I had been to see Macbeth at the theatre, a night or two before, and that her face looked to me as if it were all disturbed by fiery air, like the faces I had seen rise out of the Witches caldron.
the reference to Macbeth in the passage is an example of which literary device? a. allusion b. parallelism c. personification d. anaphora