Historical data shows that on average, a server is likely to fail once every nine months. A company has purchased 24x7, four hour hardware response to replace a server`s failed hardware. Additionally, the company can restore a server to its operational status within six hours from the time the failed hardware has been replaced. Which of the following describes this scenario? 

Answer options:

A. The company`s MTTR is ten hours.
B. Individual servers have 99.999% uptime.
C. Service can be restored within four hours.
D. The operational SLA is six hours.

A