Let's say you are conducting a hypothesis test using the p-value method. You took 2 samples A and B from the same population such that both of them have the same sample mean and the same standard deviation. If the sample size of B is 4 times the size of sample A, how would the Z-score differ for them given the same hypothesis statement?

a). Z-score would remain the same for both of them

b). Z-score for B would be 4 times than that of A

c). Z-score for B would be 2 times than that of B

d). Z-score for B would be 2 times than that of A