b. Find and interpret the lower quartile and upper quartile of the mental development index. Interpret the lower quartile. Select the correct choice below and fill in the answer box to complete your choice. (Round to one decimal place as needed.) A. Twenty-five percent of infants score lower than enter your response here. B. The percentage of infants that score below 75 is enter your response here%. C. Twenty-five percent of infants score higher than enter your response here. D. The percentage of infants that score below 25 is enter your response here