Two Unequal Masses Hang from Either End of a Massless $\Delta$

Multiple Choice

Two unequal masses hang from either end of a massless cord that passes over a frictionless pulley.Which of the following is true about the gravitational potential energy (U) and the kinetic energy of the system (K) after the masses are released from rest?

A) $\Delta$ U < 0 and $\Delta$ K > 0
B) $\Delta$ U = 0 and $\Delta$ K > 0
C) $\Delta$ U < 0 and $\Delta$ K = 0
D) $\Delta$ U = 0 and $\Delta$ K = 0
E) $\Delta$ U > 0 and $\Delta$ K < 0