Which of the following actions should the technician take to accomplish this task?

A security technician is testing a solution that will prevent outside entities from spoofing the company's email domain, which is comptiA.org. The testing is successful, and the security technician is prepared to fully implement the solution.

Which of the following actions should the technician take to accomplish this task?

A. Add TXT @ "v=spf1 mx include:_spf.comptiA.org all" to the DNS record.

B. Add TXT @ "v=spf1 mx include:_spf.comptiA.org all" to the email server.

C. Add TXT @ "v=spf1 mx include:_spf.comptiA.org +all" to the domain controller.

D. Add TXT @ "v=spf1 mx include:_spf.comptiA.org +all" to the web server.

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