Which of the Following Sequences Reflects the Order in Which $\rightarrow$

Multiple Choice

Which of the following sequences reflects the order in which nervous and endocrine system structures respond to the environment, from first to last

A) hypothalamus $\rightarrow$ pituitary gland $\rightarrow$ endocrine glands
B) hypothalamus $\rightarrow$ endocrine glands $\rightarrow$ pituitary gland
C) pituitary gland $\rightarrow$ endocrine glands $\rightarrow$ hypothalamus
D) pituitary gland $\rightarrow$ hypothalamus $\rightarrow$ endocrine glands