Select the correct options for the given statements:
Statements:
$X$: Formation of Haemoglobin is controlled by two closely linked genes $HBA1$ and $HBA2$ on chromosome $16$ of each parent.
$Y$: $\beta$-Thalassemia is controlled by a single gene $HBB$ on chromosome $21$ of each parent.

• A
  $X$ and $Y$ both are Wrong
• B
  $X$ is Wrong and $Y$ is Correct
• C
  $X$ and $Y$ both are Correct
• D
  $X$ is Correct and $Y$ is Wrong