Marriage between persons having AB blood groups would produce

a person with blood group AB has

Person having 'B' blood group have antibody :-

Person having 'B' blood group have antibody :-

Which of the statements given below are correct? 1. A person having blood group 'A' can donate blood to persons having blood group 'A' and blood group AB'. 2. A person having blood group 'AB' can donate blood to persons having blood groups 'A', 'B', 'AB' or 'O'. 3. A person with blood group 'O' can donate blood to persons having any blood group. 4. A person with blood group 'O' can receive blood from the person of any of the blood groups. Select the correct answer using the code given below:

A person having blood group 'O' can receive blood of :

A person having blood group 'O' can receive blood of :

Between persons of which two blood group is the blood tranfused not possible :

Type A blood should not be injected to a person having B-blood group. Why ?