The genotypes of a husband and wife are ${\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}} \mathrm{and} {\mathrm{I}}^{\mathrm{B}}\mathrm{i}$. Among the blood types of their children, how many different genotypes and phenotypes are possible?

• A

  3 genotypes; 4 phenotypes

• B

  4 genotypes; 3 phenotypes

• C

  3 genotypes; 3 phenotypes

• D

  2 genotypes; 2 phenotypes