Given below are some antibiotics and their microbial source. Match the correct pairs.

$1$. Chloromycetin	$a$. Streptomyces griseus
$2$. Erythromycin	$b$. Penicillium chrysogenum
$3$. Penicillin	$c$. Streptomyces erythreus
$4$. Streptomycin	$d$. Streptomyces venezuelae

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