The correct answer is: B. perpetual inventory.
Perpetual inventory is a system of keeping track of inventory on a continuous basis. This is done by recording all sales and purchases as they occur, so that the current inventory level is always up-to-date. This is in contrast to annual stock taking, which is a process of counting all inventory at the end of each year.
ABC analysis is a method of inventory management that classifies items into three categories: A, B, and C. A items are the most important items, in terms of cost or volume. B items are less important, and C items are the least important. This system helps businesses to focus their attention on the most important items, and to reduce costs associated with inventory management.
VED analysis is a method of inventory management that classifies items into three categories: V, E, and D. V items are the most valuable items, E items are essential items, and D items are the least valuable items. This system helps businesses to prioritize their inventory, and to ensure that the most important items are always available.
Continuous stock taking is a part of perpetual inventory. This is because continuous stock taking is a process of recording all sales and purchases as they occur, so that the current inventory level is always up-to-date. This is necessary for perpetual inventory, as it allows businesses to track their inventory levels on a continuous basis.