<prompt> A child presents with perioral rash and pigmentation of palmar area. What is the cause?Selenium deficiencyManganese deficiencyCopper deficiencyZinc deficiency  <response>: Option A: Selenium deficiency shows cardiomyopathy.Option B: Manganese deficiency presents with hypercholesterolemia and weight loss.Option C: Copper deficiency leads to neurological manifestations. 