Q: What are the four human blood types in ABO blood group typing?
(a)AO, BO, A and B
(b)A, B, AB and O
(c)A, AB, BO and O
(d)AB, AO, B and O
Correct Answer: (b)
The correct answer is (b): A, B, AB और O. Subject: Science & Technology | Sub-topic: Biology Note: This answer was determined through AI-based research. Verify against the official answer key when available.