Which of the following lines best explains why Gertrude thinks Hamlet is insane after killing Polonius?
OA. "These words like daggers enter in my ears." (3.4.107)
B. "This visitation-Is but to whet thy almost blunted purpose." (3.4.127)
OC. "This is the very coinage of your brain." (3.4.157)
OD. "O Hamlet, thou hast cleft my heart in twain!" (3.4.177)