A nurse is caring for a client prescribed IV morphine via PCA with a demand of 1 mg every 15 min and a 4 mg/hr lockout. The client reports unbearable pain after attempting six demand doses within the last hour. After assessing the client's pain, which of the following actions should the nurse take?
A) Administer a bolus dose of morphine
B) Notify the healthcare provider for a change in the PCA settings
C) Offer non-pharmacological pain relief measures
D) Administer a non-opioid analgesic
E) Administer naloxone to reverse opioid effects