suppose a candidate is interested in the proportion of the vote her opponent will receive. If she samples voters at random and tests hypotheses regarding p, the population portion, what should she do to reduce her risk of making a Type 1 error?

I. increase the number of voters she will sample to 50
II. Decrease the number of voters she will sample to 10
III. Increase the significance level
IV. Decrease the significance level

A. I only
B. II only
C. III only
D. IV only
E. I and III only​