They did not have the materials
They are required to have legally acquired evidence
They are required to have a warrant of arrest
I am unsure of the third. However, it could be that a witness (aside from the victim and/or officer) was present.
Answer:
The answer is the third sentence. They pointed out to him that he could possibly get a student loan for this. They said that once he is done with his studies, he could pay off the loan.
