单选题A customer asked a consultant to create the infrastructure for an application. The application is designed to charge customers for conferencing services based on usage. To determine if a Storage Area Network （SAN） is the best storage solution， which of the following questions is most appropriate？（）AWill the application require a database？BWhich operating system does the application require？CWill the data need to be backed up in real time？DDoes the application share data among the servers？
单选题
A customer asked a consultant to create the infrastructure for an application. The application is designed to charge customers for conferencing services based on usage. To determine if a Storage Area Network （SAN） is the best storage solution， which of the following questions is most appropriate？（）
A
Will the application require a database？
B
Which operating system does the application require？
C
Will the data need to be backed up in real time？
D
Does the application share data among the servers？
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