The following bar graph shows the results of an annual examination in a secondary school. Read the bar graph (Figure) and choose the correct alternative in each of the following: The pair of classes in which the results of boys and girls are inversely proportional are: (a) VI, VIII      (b) VI, IX   (c)  VIII, IX     (d)  VIII, X The class having the lowest pass rate of students is: VII    (b)  X          (c)   IX     (d)  VIII The class having the lowest pass rate of students is: VI          (b)   VII      (c)   VIII         (d)   IX