該選A~E哪一個

謝謝先進幫忙 ^^
Warranty service upgrades
ThinkPlus Maintenance Services offer you a variety of service level upgrades for your home or business systems. Use our convenient services to enhance or extend your hardware service coverage beyond its systems standard warranty term.
A. 3 year depot 9x5 Next Business Day
B. 3 year onsite 9x5 Next Business Day
C. 3 Year Notebook Priority Enterprise - 1 Year to 3 Year Onsite
Warranty service upgrades plus Accidental Damage Protection
ThinkPad Protection Services and warranty service upgrades help protect your product purchase in case of accidental damages, such as drops or falls, liquid spills and LCD damage. Include a warranty service upgrade with your protection service and gain peace of mind by proactively avoiding potential costly repairs down the road.
D. 3 Year Depot Upgrade with 3 Year ThinkPad Protection
E. 3 Year On Site Upgrade with 3 Year ThinkPad Protection
To boldly go where no one has gone before.
-小兔