Assertion $A$: Sharks are viviparous animals.
Reason $R$: Sharks possess mammary glands.
Which option is correct for Assertion $A$ and Reason $R$?

  • A
    $A$ and $R$ are both true and $R$ is the correct explanation of $A$.
  • B
    $A$ and $R$ are both true but $R$ is not the correct explanation of $A$.
  • C
    $A$ is true and $R$ is false.
  • D
    $A$ and $R$ are both false.

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Match the following:
Column-$I$Column-$II$
$(1)$ $Scoliodon$$(p)$ $Saw$ $fish$
$(2)$ $Pristis$$(q)$ $Sting$ $ray$
$(3)$ $Carcharodon$$(r)$ $Dog$ $fish$
$(4)$ $Trygon$$(s)$ $Great$ $white$ $shark$

Which of the following is a true fish?

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