A new zero-day vulnerability was discovered within a basic screen capture app, which is used throughout the environment.

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A new zero-day vulnerability was discovered within a basic screen capture app, which is used throughout the environment. Two days after discovering the vulnerability, the manufacturer of the software has not announced a remediation or if there will be a fix for this newly discovered vulnerability. The vulnerable application is not uniquely critical, but it is used occasionally by the management and executive management teams. The vulnerability allows remote code execution to gain privileged access to the system. Which of the following is the BEST course of action to mitigate this threat?

A. Work with the manufacturer to determine the time frame for the fix.
B. Block the vulnerable application traffic at the firewall and disable the application services on each computer.
C. Remove the application and replace it with a similar non-vulnerable application.
D. Communicate with the end users that the application should not be used until the manufacturer has resolved the vulnerability.