Server A hosts a mission-critical business application. The server has one disk and one NIC. The administrator has been asked to implement a solution to meet the business requirement that the application must maintain high availability, even in case of a hardware failure. Which of the following BEST meets this requirement?
A. Configure failover clustering using Server A and a new server.
B. Add multiple disks on the server and configure RAID 5.
C. Add an additional NIC and configure the NIC as standby.
D. Move the application to another server that has more resources.
