Two Identical Containers, a and B, Hold Equal Amounts of the Same

Multiple Choice

Two identical containers, A and B, hold equal amounts of the same ideal gas at the same P_o, V_o and T_o. The pressure of A then decreases by a half while its volume doubles; the pressure of B doubles while its volume decreases by a half. Which statement correctly describes the temperatures of the gases after the changes?

A) T_A = 0.5T_B = T_o.
B) T_B = 0.5T_A = T_o.
C) T_B = T_A = T_o.
D) T_A = 2T_B = T_o.
E) T_B = 2T_A = T_o.