<prompt> Which of the following statement is true regarding Catecholamines?Production terminates with dopamine in the brain but epinephrine in the adrenal glandProduction begins with the action of tyrosinase on tyrosineAre metabolized to both glucogenic and ketogenic fragmentsAll contain methyl group donated by S-adenosyl methionine  <response>: Synthesis of catecholamine is organ specific, so option A is correct.Production of catecholamine begins once tyrosine hydroxylase acts on tyrosine and forms DOPA so option B is wrong.All catecholamine are metabolized to vanillyl mandelic acid VMA which gets excreted in urine unchanged. VMA has neither glucogenic nor ketogenic fate. So option C is also wrong.Out of various catecholamine, only epinephrine has got one methyl group. Dopamine and norepinephrine do not contain any methyl group. So option D is also wrong. 