Thyrotropin-Releasing Hormone (TRH), Which Is Secreted by the Hypothalamus, Causes

Thyrotropin-releasing hormone (TRH) , which is secreted by the hypothalamus, causes the anterior pituitary to produce thyroid-stimulating hormone (TSH) .TSH, in turn, leads the thyroid to produce thyroxine, and thyroxine eventually causes reduced TRH secretion.This chain of events is an example of _______ feedback.

A) short-loop positive
B) long-loop positive
C) short-loop negative
D) long-loop negative
E) direct