Where does the first cleavage division of the zygote take place?

In human beings,cleavage of the fertilized egg:

As a result of cleavage,if blastomeres are symmetrically placed around the polar axis,the type of cleavage is known as:

Observe the diagram of an ovum surrounded by a few sperms:
Which of the following options is correct for the labelled parts $A, B$ and $C$?
$A$ $\quad$ $B$ $\quad$ $C$

In mammals,the sperm produces an enzyme-like substance called sperm lysin. What is it called?

Fertilisation takes place in . . . . . . of Human.