Sandy and Maria worked the following weekly hours this summer at a summer camp. Which of the following statements are true?

sandy - 15, 25, 12, 30, 26, 18
maria - 14, 19, 26, 42, 15, 10

a) the interquartile range for sandy is less than the interquartile range for maria
b) the mean for sandy is greater than the mean for maria
c) the median for maria is greater than the median for sandy
d) the range for maria is less than the range for sandy