All Mammalia are Chordata, and all Rodentia are Mammalia. Also, some Chordata are Aves. Which of the following MUST be true?
A. All Aves are Mammalia
B. All Mammalia are Aves
C. All Chordara are Mammalia
D. All Rodentia are Chordata
E. None of these
সঠিক উত্তরঃ
D.
All Rodentia are Chordata
Explanation:
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