Should schools eliminate "D" grades?

"D" grades, should they even have the honor to be called a grade? I think not, "D" grades should be eliminated from school grading because it provides enough COMPENSATION to the students that think they do not have to apply themselves. It is a lazy way of passing and as a matter of fact, it is not really passing, it is the bridge between passing and failing. Also it is irrelevant for teachers to give "D" grades to students that do not put effort into their own grade. Another reason is because if INITIALLY the student starts the year with no "D" grades being availiable, then the student will create a habit of either earning "F" and below grades or "C" and above grades. For example, Shanika went to a middle school where "D" grades were not acceptable and she feels good that she now has the habit of working for good grades. Also if the bar of expectation is risen then the bar of passing students will to because students will INTERACT with the teacher so that they can not fail. So in conclusion, "D" grades should be eliminated from school grading.