Biology homework help with DNA gel electrophoresis

1. Standard
2. Blood found at the crime scene
3. Suspect 1
4. Suspect 2
5. Suspect 3

Which of the following conclusion can be made from the result? 

The DNA was not properly digested by the restriction enzyme in lanes 2-5.

Suspect 3 is guilty because his/her DNA has the closest match to the standard.

Suspects 1 and 3 are relatives.

Suspect 2’s blood is found at the crime scene.

This gel is showing that all lanes match.