What Could a Catalogue Retailer Use to Determine That Customers

What could a catalogue retailer use to determine that customers who change residences are three times as likely as customers who have not moved to buy tables,fax machines,and decorative products but no more likely to buy jewellery or footwear?

A) a data analysis approach that identifies patterns of characteristics that relate to particular customers or customer groups
B) customer-initiated information systems
C) trend analysis and hypothesis testing to reveal trends in consumer behaviour
D) automatic extrapolation to predict past behaviour