Could you please help me to do questions 9? Thanks

Question 9 (1 point) Consider two consumers A and B. Consumer A is endowed with 32 units of X and 32 units of Y. Consumer B is endowed with 24 units of X and 24 units of Y. Their utility functions are given by: UA = XAYA and UB = -XB + YB 2 If the price ratio is equals 1/2, which of the following allocations constitutes a competitive equilibrium? XA = 18, YA = 36; XB = 38, YB = 20 XA = 48, YA = 24; XB = 8, YB = 32 XA = 36, YA = 18; XB = 20, YB = 38 O XA = 24, YA = 48; XB = 32, YB = 8