You work as a senior administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers on the ABC.com network have Windows Server 2012 R2 installed. You are running a training exercise for junior administrators. You are currently discussing printer pooling.Which of the following is TRUE with regards to printer pooling？（）

• A、Printers in a pool must be of the same model， and use the same printer driver
• B、Each printer in the pool must have a different printer driver.
• C、Printer ports used in the pool must be of the same type
• D、The types of printer ports used in the pool must be mixed.
• E、Pooled printers appear to workstations as a single printer.
• F、A minimum of three printers are required to configure a printer pool.