Passive to active: 'The claim/suggestion that ... was denied/dismissed' (noun + that-clause subject)

1. A.
   The company denied that the system had been hacked.
2. B.
   The hacking of the system was denied by the company.
3. C.
   It was denied that the hacking occurred by the company.
4. D.
   The company had denied hacking the system.

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1. A.
   The system tampered the claim, which was dismissed.
2. B.
   The dismissal of the system tampering was claimed.
3. C.
   It was dismissed as baseless that the system was tampered with.
4. D.
   Authorities dismissed the claim that someone had tampered with the system.

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