Solve the system If the system has infinitely many solutions write the solution set with z arbitrary 5x 2y z 0 x y 0 20x 8y 4z 0 Select the correct choice below and if necessary fill in the answer boxes to complete your choice O A There is one solution The solution set is Simplify your answers OB There are infinitely many solutions The solution set is z where z is any real number Simplify your answers Type expressions using z as the variable OC The system is inconsistent The solution set is