May has 31 days. How would the experimental probability be affected if someone mistakenly used 30 days to calculate the experimental probability that the maximum temperature will not be greater than 90ºF on a given day in May? (Hint: Select the correct reason with the correct calculation.)

answer choices:
20/31 is greater than 19/30 so using fewer days in the month produces a smaller probability

19/31 is greater than 19/30 so using fewer days in the month produces a smaller probability

20/31 is greater than 19/30 so using fewer days in the month produces a greater probability

19/30 is greater than 20/31 so using fewer days in the month produces a greater probability