A survey is about the situation of watching television among 100 people. There are 60 people watching sports program, 35 people watching the news program, and 40 people watching other programs. 10 people watch all the programs, and 5 people do not watch any programs. There are 10 people just watching two programs: the news and sports program, and 4 people just watching two programs: sports and other programs. How many people just watch one program: other shows?
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正确答案: C