The work arrangements of a county party committee for several leaders next Monday are as follows: (1) if Deputy Secretary Li is on duty in the county seat, then he will attend the regular meeting of propaganda work; (2) if Deputy Secretary Zhang is on duty in the county seat, then he has to do letters and visits reception; (3) if Secretary Wang goes to the countryside for research, then Deputy Secretary Zhang or Deputy Secretary Li needs to be on duty in the county. (4) Secretary Wang does not go to the countryside for research only if he participates in the regular meeting of propaganda work or does the reception of letters and visits; (5) the regular meetings of propaganda work only need to be attended by the deputy secretary in charge of publicity, and only one deputy secretary is required to participate in the reception of letters and visits.
Based on the above work arrangement, which of the following can be derived?
Deputy Secretary Li does the reception of letters and visits