What is correct for parthenium (Carrot grass)?

$(a)$ It came into India as a contaminant with imported wheat

$(b)$ It causes allergy

$(c)$ Asexual reproduction occurs in its flower

  • A

    $b$ -correct

  • B

    $b, c$ -correct

  • C

    $a$ - correct

  • D

    $a, b$ - correct

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