Which benefit applies to ECC memory?

A.
Offers superior data integrity by correcting single bit memory soft errors

B.
Offers maximum expandability in data storage options and connectivity options

C.
Offers increased reliability for always-on environments where rebooting computers is not an
option

D.
Offers superior efficiency of storage space effectively increasing storage in the same device

Explanation:
http://h20331.www2.hp.com/Hpsub/downloads/financial_whypws_whitepaper_March2005.pdf(page 5, ECC memory)