Which of the following statements are true or false?
$I$. Calcitonin regulates the metabolism of calcium.
$II$. Oxytocin stimulates contraction of uterine muscles during birth.
$III$. Grave's disease is caused by the malfunctioning of the adrenal gland.
$IV$. $ADH$ stimulates the absorption of water and increases urine production.

• A
  $I$ and $III$ are true; $II$ and $IV$ are false
• B
  $I$ and $II$ are true; $III$ and $IV$ are false
• C
  $I$ and $IV$ are false; $II$ and $III$ are true
• D
  $I$,$II$,and $III$ are true; $IV$ is false