As part of a class project, a university student surveyed the students in the cafeteria lunch line to look for a relationship between eye color and hair color among students. the table below contains the results of the survey.

(photo
eye color
hair
color blue gray green brown marginal
totals
blond 42 5 21 10 78
red 12 22 19 12 65
brown 22 5 12 34 73
black 9 3 11 64 87
marginal
totals 85 35 63 120 303

from the sample population of students with gray eyes, what is the relative frequency of students with red hair?
a.
0.07

b.
0.12

c.
0.34

d.
0.63