This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parathyroid and adrenal glands, Subject name: Surgery
Indication for surgery in a case of adrenal incidentaloma: 
Select and explain. 
A. Size>5 cm, B. Bilateral adrenal metastasis, C. Functional tumor, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Indications of surgery in Incidentaloma: Suspicious imaging characterstics (irregular margins) Size>5 cm Bilateral adrenal metastasis Functional tumor Young age Few surgical risk factors Interval tumor growth Patient preference.