5. Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
(A) Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point.
(B) Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point.
(C) Masses A and B will travel equal distances between their highest and lowest points.
(D) More work was done on mass A by the extending force than on mass B by the compressing force.
(E) The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.