According to the passage, which of the following affirmatives can be inferred from the text?

1. The main purpose of criminal forensics is to provide scientific and technical evidence for legal proceedings.
2. A forensic expert is primarily responsible for representing the prosecution in court.
3. Forensic professionals must be impartial, which means they should analyze evidence objectively and scientifically.
4. Evidence preservation at a crime scene is important because it speeds up the trial process.
5. DNA analysis in forensic science is mainly used to replace fingerprint analysis.

Choose the alternative which contains the correct affirmatives.