The ages of the people in attendance at the showing of an award-winning foreign film are shown below.

which statement must be true according to the histogram?

a) the data is symmetrical, showing that the majority of the attendees were between the ages of 30 and 50.

b) the data is symmetrical, showing that the majority of the attendees were between the ages of 21 and 60.

c) the data is skewed, showing that the majority of the attendees were between the ages of 30 and 50.

d) the data is skewed, showing that the majority of the attendees were between the ages of 21 and 60.