Which of the following statements is true regarding ketorolac tromethamine?I. IV ketorolac can be used to treat severe pain for patients for whom narcotic analgesics are to be avoidedII. Intranasal ketorolac is intended to provide systemic activity for patients who are npoIII. Ketorolac therapy should not be administered continuously for more than two weeksa. I onlyb. III onlyc. I and II onlyd. I and III onlye. II and III only