Software Testers in a Software Development Company Installed the New

Software Testers in a software development company installed the new release on test systems and started the testing phase. Testers verified the new functionality, performed necessary security testing and completed planned regression tests. During the last week of testing, testers noticed that the memory utilization was more than 95% on two of the test servers (out of 4 servers) . This behavior was not observed during the first weeks of the testing phase. As a test analyst, what would you do?

A) Ignore the problem because other two servers are okay (memory utilization is normal)
B) Report the problem to the developer immediately and create a defect report because it could be a problem related to memory leak.
C) Reboot the system so that memory utilization will come back to normal. Not report it as a problem.
D) Create a defect report and reboot the system to correct the memory problem.