Critical Reasoning (CR) | None of the people who listened to the debates and thought

None of the people who listened to the debates and thought that the Democrat argued more convincingly than the Republican is a registered Republican, but some of these people intend to vote for the Republican candidate anyway.

If the statements above are true, which one of the statements below must also be true?
A. No one who thought the Republican argued more convincingly than the Democrat intends to vote for the Republican candidate.
B. No one who heard the debates is a registered Republican.
C.
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