These 2 circle graphs show the most popular physical activities that Grade 8 and Grade 9 students participate in.
i) Equal numbers of students in Grade 8 and Grade 9 play soccer.
ii) More Grade 8 students prefer swimming.
iii) Running is the least popular activity in both grades
iv) The number of Grade 8 students who chose volleyball is the same as the number of Grade 9 students who chose swimming.