Examples of chemicals produced by plants as a defense against grazers and browsers

$I.$ Nicotine

$II.$ Caffeine

$III.$ Quinine

$IV.$ Strychnine

$V.$ Opium

Choose the correct combination

  • A

    $I$ and $II$

  • B

    $I, II, III$ and $IV$

  • C

    $I, II$ and $III$

  • D

    $I, II, III, IV$ and $V$

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