Are Avid Readers More Likely to Wear Glasses Than Those

Are avid readers more likely to wear glasses than those who read less frequently? Three hundred men in Ohio were selected at random and characterized as to whether they wore glasses and whether the amount of reading they did was above average,average,or below average.The results are presented in the following table. This is an r × c table.What is the value of the number r?

A) 2
B) 3
C) 4
D) 6