A 68-year-old man with metastatic prostate cancer has severe constant bone pain despite regular Paracetamol and occasional weak opioids. Renal function is normal. What is the most appropriate next step in pharmacological pain management?AStart oral immediate-release Morphine as first-line strong opioid and titrateBStart long-term non-steroidal anti-inflammatory drug onlyCAvoid strong opioids due to addiction riskDGive intermittent intramuscular Morphine injectionsEStart fast-acting Fentanyl patches as first-lineCheck my answer