Final answer:
Monty Corp uses the Perpetual inventory system.
Step-by-step explanation:
The type of inventory system that Monty Corp uses is the Perpetual inventory system.
In a perpetual inventory system, the inventory records are updated in real-time as each transaction occurs. This means that every time a product is bought, sold, or returned, the inventory levels are immediately adjusted.
Monty Corp most likely uses this system to have accurate and up-to-date information about their inventory levels at all times, allowing them to make better decisions regarding procurement, production, and sales.