If alpha is held constant at .05, what is the relationship between sample size , the critical region and the risk of type 1 error?

a) as sample size increases, the critical region expands and the risk of type 1 error increases

b)as sample size increases, the critical region shrinks and the risk of type 1 error increases

c)as sample size increases, the critical region expands and the risk of type 1 error decreases

d) there is no relationship