Fingerprints might have proved that the suspect was at the scene of the crime

A. The suspect might be at the scene of the crime though his fingerprints might have not been proved. 

B. It was possible that fingerprints proved the presence of the suspect at the scene of the crime. 

C. Fingerprints are proved to have belonged to the suspect at the scene of the crime. 

D. Without doubt, the suspect was at the scene of the crime due to hid fingerprints.