Which of the following is true about Warehouse capacity?

1-The capacity of a warehouse is measured in units of surface, which can be square meters, etc.

2-The capacity of a warehouse is measured in units of volume that can be cubic meters, liters, etc.

3-The capacity of a warehouse is measured in storage units, which can be independent products, boxes, pallets, etc.

4-The capacity of a warehouse is measured in inbound Transport vehicle per unit of time.