Which quote is properly formatted?

It will use the following information -

direct quote - Missy loves ramen noodles.

Krista Smith

page 66

a
Ms. Smith stated clearly that "Missy loves ramen noodles." (Smith 66).
b
Ms. Smith stated clearly that "Missy loves ramen noodles," (66).
c
Ms. Smith stated clearly that "Missy loves ramen noodles," (Smith 66).
d
Ms. Smith stated clearly that "Missy loves ramen noodles." (66).

c

Ms. Smith stated clearly that "Missy loves ramen noodles," (Smith 66).