Multiple choice question. Tick (✓) the correct choice:
The four blood groups in humans are
- A, B, C and D
- A, B, AB and C
- A, B, AB and O
- A, B, AB and OO
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Solution
3. A, B, AB and O
Concept: Blood Vessels of the Heart: Vena Cavae, Pulmonary Veins, Pulmonary Trunk, Aorta, Coronary Artery and Vains
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