What gender are my silkies?

[starrmar006]

I have 3 silkies that are a little bit over 10 weeks old and I wanted to know if I have any roosters.
Silky A

Silkie B

Silkie C

I don't know if they all are clear I did this from my phone.... Very confusing

 

[ChickNanny13]

I don't own Silkies but from what I've read/figured out and I maybe wrong ...
A = Pullet
B & C = Cockerels

 

[drumstick diva]

Way to early but, the first one has a comb that is pushing back his crest. That 'can' be a sign of a cockerel.