What is true about cleavage in the fertilised egg in humans?

$A$: Fertilizins are glycoproteins present on the surface of the egg membrane.
$R$: They help in the agglutination reaction by interacting with anti-fertilizins on the sperm surface to facilitate fertilization.

In vivo fertilisation involves the fertilisation that takes place:

Which of the following statements is not correct?

What are the outer layer cells of the blastocyst called?

In the blastocyst,the blastomeres are arranged into an outer layer called _ $A$ _ and an inner group of cells attached to the trophoblast,called _ $B$ _.