Which of the following compounds show optical activity?

#1

?

#2

A. it is of the form M(AA)3

#3

Why can't C be also possible i dont see any point/plane of symmetry if there is one please point it out

#4

I think the correct answer will be both A) and C) this you can easily identify by drawing the structures.
A) is of form M(AA)3 type and C) is MA3B2C type.