A child psychologist has determined that the amount of time that a group of children spent playing video games in a day is normally distributed with the average time of 85 minutes and a standard deviation of 10 minutes. What playing time is ranked in the top 25th percentile? Question 18 options: a) 85.5 minutes b) 78.3 minutes c) None of the options d) 61.0 minutes e) 91.7 minutes