Enlarging and shrinking topics are common in debates. In mutual disputes, debaters often deliberately expand the opponent's topic to push the opponent's topic to a ridiculous position to facilitate their own rebuttals and offenses. They argue and defend, and the debaters often deliberately narrow their arguments. Based on the above definitions, which of the following uses the expanded topic? ['Explain the thesis "Middle school student heterosexual interactions do more harm than good" as "Middle school student heterosexual interactions must do more harm than good".', 'Interpret the topic "human nature is evil" as "human beings have instincts and desires inherently, and therefore human nature is evil".', 'Interpret the thesis "Germans are rigorous" as "All Germans are rigorous".', 'Interpret the thesis "human nature is good" as "no one is not good".']