Context: This was apparent just from having the nurse assist with the supplies and pulling the blood draw ( that 's the only part that is required for the nurse to do , but is done after the new needle is in and the port is dressed ) . She pulled out an UNWRAPPED tegaderm from her bag and gave it to me with out batting an eye expecting me to put it over Nora 's port . Not only was it out of the wrapping but had obviously been out of the wrapping for a while and the backing to the adhesive looked dingy , not that we would have used it either way .

Question: What may be the reason for them not using any supplies provided by that person ?
Options:
0. They know she bought the supplies from off the street .
1. They are opened and dirty .
2. None of the above choices .
3. They trust them but want to use their own supplies .
Answer: 1