A tech$-$savvy banker is suspected of money laundering using an unauthorized app. When the banker is called into the branch manager's office, the banker is immediately locked out of the office. A digital forensics incident response team goes into the office, documents the surroundings, and takes custody of the computer as well as other devices. What is the response team doing?

Group of answer choices

They are documenting the chain of custody.

They are preparing to generate a report.

They are preserving evidence.

They are securing the scene