All vertebrates possess a ...$A$.... Fishes have a ...$B$... chambered heart with atrium and ventricles. Amphibians and reptiles have a ...$C$... chambered heart. Birds and mammals have ...$D$... chambered heart.
Choose the correct option.

  • A
    $A-$ muscular chambered heart,$B- 3, C- 2, D- 4$
  • B
    $A-$ muscular chambered heart,$B- 2, C- 3, D- 4$
  • C
    $A-$ muscular chambered heart,$B- 4, C- 3, D- 2$
  • D
    $A-$ muscular chambered heart,$B- 3, C- 4, D- 2$

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