Assertion : ABO blood group system provides a good example of multiple alleles
Reason : In ABO blood group system, when `I^(A)` and `I^(B)` alleles are present together, they both express their own types

Options

A. If both (A) and (R ) are true and (R ) is the correct explanation of (A).
B. If both (A) and (R ) are true but (R ) is not the correct explanation of (A).
C. If (A) is true but (R ) is false.
D. If both (A) and (R ) are false.

Answer

A