What type of cloud is in the following picture of a thunderstorm? 
Definitions:
FOB Shipping Point
A shipping term indicating that the buyer assumes the risk and transportation costs for goods once they have left the seller's premises.
Merchandise Inventory
Finished goods available for sale to customers in a retail or wholesale business.
Periodic Inventory System
An inventory accounting system where inventory levels are updated and cost of goods sold is calculated at the end of an accounting period.
Perpetual Inventory System
A method of keeping track of inventory in real-time, where inventory levels are updated after every sale or purchase transaction.
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