Identify the correct statements from the following:
$I)$ When $DNA$ is hydrolysed,adenine and thymine are obtained in equal quantities.
$II)$ When $RNA$ is hydrolysed,adenine and uracil are obtained in equal quantities.
$III)$ Amylose is a branched polymer with $\alpha-1 \rightarrow 4$ and $\alpha-1 \rightarrow 6$ glycosidic linkages.
$IV)$ Addison disease is due to the abnormal functioning of adrenal cortex.

• A
  $I, II, III$ only
• B
  $I, II, III, IV$
• C
  $I, II, IV$ only
• D
  $I, IV$ only