$I.$ The adrenal cortex secretes many hormones called corticoids.
$II.$ Corticoids involved in carbohydrate metabolism are called glucocorticoids.
$III.$ Cortisol is the main glucocorticoid.
$IV.$ Aldosterone is the main mineralocorticoid.
Select the correct combination from the given options.

• A
  $I, II \text{ and } III$
• B
  $II, III \text{ and } IV$
• C
  $I, III \text{ and } IV$
• D
  $I, II, III \text{ and } IV$