Which of the Following Statements Is (Are) Correct

Multiple Choice

Which of the following statements is (are) correct?
I. Hormones often regulate homeostasis through antagonistic functions.
II. Hormones of the same chemical class usually have the same function.
III. Hormones are secreted by specialized cells usually located in exocrine glands.
IV. Hormones are often regulated through feedback loops.

A) only I and II
B) only II and III
C) only I and III
D) only III and IV
E) only I and IV