Harold Wants to Limit the Probability of Making a Type $\alpha$

Multiple Choice

Harold wants to limit the probability of making a Type I error to 5%. He should ____.

A) use an $\alpha$ = 0.95
B) use a $\beta$ = 0.95
C) use an $\alpha$ = 0.05
D) use a $\beta$ = 0.05
E) collect a large sample