If three dozen cookies cost $9, what is the cost per cookie?

Responses
A $0.25$0.25
B $0.50$0.50
C $2.25$2.25
D $3.00

Since there are 3 dozen cookies, this is equivalent to 36 cookies. Dividing the total cost of $9 by the number of cookies, we find that the cost per cookie is $\frac{9}{36} = \boxed{\textbf{(A) }$0.25}$.