In pheochromocytoma, not a pa the rule of 10 is

Ans is 'd' i.e. 10% are symptomatic Pheochromocytomas usually subscribe to a convenient "rule of 10" or "10% tumor"; i.e. 10% of pheochromocytomas are :-Bilateral Extra-adrenal FamilialMalignant Multiple Occur in children