second, the first and second paragraphs of Article 39 of the Criminal Procedure Law stipulate that defense lawyers can meet and correspond with criminal suspects and defendants in custody. Other defenders, with the approval of the people's courts and people's procuratorates, may also meet with criminal suspects and defendants in custody. If a defense lawyer holds a lawyer's practice certificate, a law firm's certificate and a power of attorney, and a letter of legal aid to ask for a meeting with the criminal suspect or defendant in custody, the detention center shall arrange the meeting in time, which shall not exceed 48 hours at the latest. Item b, no more than 24 hours at the latest.
so choose option B ..
Note: On October 26th, 218, the Sixth Session of the 13th the NPC Standing Committee of the People's Republic of China passed the Decision of the NPC Standing Committee on Revision, and the newly revised Criminal Procedure Law came into force on October 26th, 218.