Q.14 Is the answer B blood group and O blood group in ratio of 1:1?

$$\begin{gathered} 14. \mathrm{A} \mathrm{man} \mathrm{having} \mathrm{blood} \mathrm{group} \mathrm{O}\left({\mathrm{I}}^0{\mathrm{I}}^0\right) \mathrm{marries} \mathrm{a} \mathrm{woman} \mathrm{with} \mathrm{blood} \mathrm{group} \\ \mathrm{B}\left({\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^0\right).\mathrm{What} \mathrm{will} \mathrm{be} \mathrm{the} \mathrm{blood} \mathrm{group} \mathrm{of} \mathrm{their} \mathrm{children} ? \end{gathered}$$