Your application is running on Compute Engine and is showing sustained failures for a small number of requests. You have narrowed the cause down to a single Compute Engine instance, but the instance is unresponsive to SSH. What should you do next? 

Answer options:

A. Reboot the machine.
B. Enable and check the serial port output.
C. Delete the machine and create a new one.
D. Take a snapshot of the disk and attach it to a new machine.

A