Final answer:
D) October and November
Physical inventories on active storage tanks are normally taken between October and November to ensure accurate accounting records and identify any discrepancies or leaks.
Step-by-step explanation:
Physical inventories on active storage tanks are normally taken between October and November. This is because October and November are usually months when business operations slow down, allowing companies to allocate resources for inventory counting and reconciliation. Taking physical inventories during this time helps ensure accurate accounting records and provides an opportunity to identify any discrepancies or leaks in the tanks.