A. Two groups
B. Three groups
C. Four groups
D. Five groups
Answer
Correct Answer: C. Four groups
Detailed About MCQs
There are four main blood groups (types of blood) – A, B, AB, and O. Within the ABO group, four major categories are divided into eight common blood types.
- A, B, O, and AB Positive
- A, B, O, and AB Negative