You need to design a storage strategy that meets all business and technical requirements. What should you do？（）

A. Create a storage group for each office. Within each storage group， create a single database
B. Create a storage group for each region. Within each storage group， create a single database
Create a storage group for each region. Within each storage group， create separate databases for each office in that region
D. Create a single storage group. Within that storage group， create a separate database for each office