Choose correct pair.

Column $- I$ Column $- II$
$(I)$ Aspergillus niger $(p)$ Lactic acid
$(II)$ Acetobacter aceti $(q)$ Acetic acid
$(III)$ Lactobacillus $(r)$ Citric acid
$(IV)$ Clostridium butylicuml $(s)$ Butyric acid

$I$    $II$    $III$    $IV$

  • A

    $p$    $q$    $r$    $s$

  • B

    $s$    $r$    $a$    $p$

  • C

    $r$    $q$    $p$    $s$

  • D

    $s$    $p$    $a$    $r$

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$R$ : Toddy left for a few hours undergoes fermentation.

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