Match the following columns:

Column $I$	Column $II$
$1.$ Pneumococci	$a.$ Attack lymphatic vessels and lymph nodes
$2.$ Plasmodium	$b.$ Attack alveoli
$3.$ Filarial worm	$c.$ Attack macrophages and helper $T$ cells
$4.$ Retrovirus	$d.$ Attack liver cells and red blood cells

• A
  $(1-c), (2-d), (3-a), (4-b)$
• B
  $(1-c), (2-a), (3-d), (4-b)$
• C
  $(1-d), (2-a), (3-b), (4-c)$
• D
  $(1-b), (2-d), (3-a), (4-c)$