A teacher with sober thoughts, in accordance with the rules...? Mcqs

A teacher with sober thoughts, in accordance with the rules...?

(A) Instructs his students not to commit any mistake at any point of time

(B) Takes so many precautions so that students never make mistakes

(C) Give right punishment to those students who make mistakes

(D) Allows students to make mistakes but instructs them to reduce the number of such mistakes