Identify the correct statement about the philosophical periods and authors mentioned in the text:
a. The Cynics and the Stoics were part of the Hellenistic period of ancient philosophy.
b. Aristotle's philosophy is based on transcendence and the theory of ideas.
c. The Epicureans believed that the supreme good was pleasure, and that there was no distinction between true and false.
d. Augustine of Hippo was part of the Scholastic period of medieval philosophy.
e. Thomas Aquinas believed in the doctrine of illumination and the interior path to God.

a. a, b, and c are correct.
b. b, c, and d are correct.
c. c, d, and e are correct.
d. a, d, and e are correct.