Article 36 of the Criminal Procedure Law: "Defense lawyers may provide legal aid to criminal suspects during investigation; Acting as an agent for complaints and accusations; Apply for changing compulsory measures; Learn from the investigation organ about the crimes and cases suspected by the criminal suspect and put forward opinions. " In the investigation stage, apply to the public security organ to change the compulsory measures against Li, so item A is correct. According to Article 38 of the Criminal Procedure Law: "From the date when the people's procuratorate examines and prosecutes the case, the defense lawyer may consult, extract and copy the case file. Other defenders may also consult, extract and copy the above materials with the permission of the people's court or the people's procuratorate. " Zhao Can consulted, extracted and copied the case file, so item B is correct. According to Article 37 of the Criminal Procedure Law: "Defence lawyers can meet and correspond with criminal suspects and defendants in custody. Other defenders, with the permission of the people's courts and people's procuratorates, may also meet and correspond with criminal suspects and defendants in custody. " Article 43 With the consent of witnesses or other relevant units and individuals, defense lawyers may collect materials related to this case from them, apply to the people's procuratorate or the people's court to collect and obtain evidence, or apply to the people's court to notify witnesses to testify in court. With the permission of the people's procuratorate or the people's court, and with the consent of the victim or his close relatives or witnesses provided by the victim, the defense lawyer may collect materials related to the case from them. Zhao Can collects materials related to the case file from the victim, so item D is wrong.
So choose ABC project.