A customer is considering replacement of twenty older 4U and 6U rack-based servers with one IBM x366 Server running VMWare ESX attached to one DS4300. Which of the following represents a reduction in Total Cost of Ownership （TCO） for the customer？（）
- AReduction in operating system software licensing and application costs
- BReduction in floor space and hardware cost saving
- CVMWare is licensed per system so no extra charge for SMP support
- DNo single point of failure， reducing downtime