Within each of the three broad categories of majors, determine the four majors that have the lowest 25th percentile of annual earnings. For each major, determine its name, broad category, 25th percentile of annual earnings, and percentage of women. Exclude any majors with missing data on 25th percentile of annual earnings or percentage of women. Arrange the data in ascending order based on 25th percentile of annual earnings. Print the wrangled data frame.