The Code of Ethics of Professional Teachers provides that a teacher has the right and duty to determine the academic marks and the promotion of learners. What is the obligation of the teacher in relation to the aforementioned right as mandated in the Education Act of 1982?

A. Refrain from making deductions in students ratings for acts not of poor scholarship.

B. Refrain from discriminating high and low achievers in the classes they handle.

C. Refrain from influencing corporal punishment and make it a basic for deductions in scholastic ratings.

D. Refrain from segregating the fast and slow learners for convenience in rating them.