Which Statement Relating to the Adrenal Gland Is True

Which statement relating to the adrenal gland is true?

A) Beta blockers selectively block beta-adrenergic receptors and are prescribed to reduce symptoms of anxiety.
B) Adrenergic receptors respond to hormones released from the adrenal cortex.
C) The effect of norepinephrine on a target cell is independent of receptor type.
D) Beta blockers enhance the fight-or-flight response to epinephrine.
E) Alpha- and beta-adrenergic receptors respond equally to the hormones they bind to.