Consider the following grading system for a hypothetical economics class. Students with an "A" average at the end of the semester will give up one letter grade to students who earn an "F" (i.e. the A

Consider the following grading system for a hypothetical economics class. Students with an "A" average at the end of the semester will give up one letter grade to students who earn an "F" (i.e. the A students will receive a "B", and the "F" students will receive a "D". Students who have a "B" average, will give up a letter grade to students who earn a "D" (the B students will end up with a "C" and the "D" students end up with a "C"). The C students will keep their grades as a "C". Which economic system is most comparable to the grading system described above?Group of answer choices