Which of the Following Is a Major Advantage of Piece

Which of the following is a major advantage of piece wages?

A) It provides incentives to improve productivity.
B) It stresses on improving quality of products at the expense of quantity.
C) It is directly associated with an employee's self-actualization needs.
D) It is easy to compute as it remains fixed for every employee.
E) It requires a manager to supervise the work of subordinates.