Which of the following statements about blood grouping is not correct

Which of the following statements about blood grouping is not correct

a. It can be used to resolve confusion of identity in alleged exchange of babies in maternty unit

b.It is the method to conclusively fix the patenity

c.It can assist in matching fragmented human remains in mass disater.

d. It can help to show whether bloodstain on the weapon belongs to the suspect or victim

ans:b.It is the method to conclusively fix the patenity