Given the scenario: A customer can make many purchases, and each purchase is for one or more items. Each purchased item is sold at the current price of the corresponding item sold by a company. The current price of an item changes over time, and each item is supplied by several suppliers.

Which aspect of this scenario can show the line-item pattern?

i.The relationship between customer and purchase

ii.The relationship between purchase and purchased item

iii.The relationship between purchased item and item

iv.The relationship between supplier and item