80. Which one of the following descriptions can be the preferred practice when working with self-harm behaviors in the classroom? (A) Assign “angels” and have students to take care of each other in working groups. (B) To protect students’ safety, ask students to hand over their tools for self-harm. (C) Actively encourage students to think positively and to practice cognitive reframing techniques. (D) Empower students by life education and normalize the existential crisis of life.