A finance company needs to increase its storage but has run out of floor space in the data center.Currently they have two ESS 800 systems with a total of 125 TB of System z data. Which of thefollowing IBM System Storage products would allow them to replace the ESS 800 systems,increase their performance, reduce their floor space, and still allow them room to grow?（）

• A、N5200 
• B、DS5020 
• C、DS5300 
• D、DS8700