Identify the correct statements regarding class $Aves$.
$I$. Forelimbs are modified into wings and hindlimbs are modified for walking and swimming.
$II$. Heart is completely four-chambered.
$III$. They are homeotherms.
$IV$. They are oviparous and development is direct.

  • A
    Both $I$ and $III$
  • B
    Both $I$ and $IV$
  • C
    $I$,$II$ and $III$
  • D
    All of these

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