Which of the following statements is correct about 'Gaining Access' stage in hacking?

This stage signifies gathering information, as much as possible, about the target.

This stage is used to take the information gathered in recon and actively apply tools and techniques.

In this stage, a true attack is applied against the targets that are identified in scanning stage.

This stage is used by the hackers who attempt to construct backdoors or access pathways, so that they have a way back into the system.

In this stage, the hacker attempts to hide or conceal his success and avoid detection.