Confidential information related to Application A, Application B, and Project X appears to have been leaked to a competitor. After consulting with the legal team, the IR team is advised to take immediate action to preserve evidence for possible litigation and criminal charges. While reviewing the rights and group ownership of the data involved in the breach, the IR team inspects the following distribution group access lists:
Group Name: product-updates-application-a
Members: administrator, app-support, dev-ops, jdoe, jsmith, mpeters
Group Name: pending-bug-fixes-application-a
Members: administrator, app-support, dev-ops, jsmith, jdoe, mpeters, rwilliams
Group Name: inflight-updates-application-b
Members: app-support, dev-ops, jdoe, nbrown, jsmith
Group Name: PoC-project-x
Members: dev-support, product-mgt, jsmith, nbrown, rwilliams
Which of the following actions should the IR team take FIRST?
A. Remove all members from the distribution groups immediately.
B. Place the mailbox for jsmith on legal hold.
C. Implement a proxy server on the network to inspect all outbound SMTP traffic for the DevOps group.
D. Install DLP software on all developer laptops to prevent data from leaving the network.

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