Which of These Statements Applies to the Adrenomedullary Hormones

Which of these statements applies to the adrenomedullary hormones

A) Epinephrine accounts for 80 percent of adrenomedullary catecholamine output.
B) Epinephrine and norepinephrine are stored within chromaffin granules in the adrenomedullary cells.
C) Epinephrine and norepinephrine have about equal affinities for all the adrenergic receptor types.
D) Epinephrine is at least 10 times more potent than norepinephrine at beta-2 receptors.