$A$ superior female,in the case of cattle,is the $A$ that produces more milk per lactation. On the other hand,a superior $B$ is that $C$ which gives rise to $D$ as compared to those of other males. Here $A$ and $D$ refer to:

• A
  $A-$cow,$B-$male,$C-$bull,$D-$superior progeny
• B
  $A-$buffalo,$B-$male,$C-$bull,$D-$inferior progeny
• C
  $A-$cow,$B-$male,$C-$bull,$D-$inferior progeny
• D
  $A-$cow,$B-$male,$C-$bull,$D-$normal progeny