Small animals suitable for experimentation must reproduce quickly and their genes should be as similar to humans as possible; some small animals reproduce fast but have few genes similar to humans; therefore, some fast-growing small animals are not suitable for experiments. Which of the following logical structures is most similar to the problem. ['According to relevant regulations, in order to obtain the National Poor Student Scholarship, applicants must have a poor family and excellent grades; some of the recipients of this scholarship are very poor, but their grades are not excellent; obviously, the rules for assessing the National Poor Student Scholarship have not been obtained. Strict enforcement.', 'To get a good box office for a movie, it must have both visibility and a successful market release; some movies with good box office are actually not highly visible; therefore, the main reason why some movies are good at the box office is Successful market launch.', 'To take the course "Philosophy of Cognitive Science", you must have completed "Knowledge of Knowledge" and be interested in cognitive science; although some students are interested in cognitive science, they have not taken "knowledge" Thesis; therefore, some students who are interested in cognitive science cannot take the course Philosophy of Cognitive Science.', 'Generally, computers that are not used for weekly system maintenance must be taken to a specialist store for repair after one year of use; some computers do not need to be taken to a specialist store for repair after a long period of use; therefore, some Computers undergo system maintenance every week.']