Are my Rhode Island Red chicks pullets or cockerels?

[CluckYeah8908]

Are they boys or girls? They're around 9-10 weeks old. I labeled them A-C. Thank you for your help!

 

[lydiagirl99]

I'm not super experienced in the sexing of chickens so I wouldn't 100% rely on my input but considering they're that old, they all seem to be pullets to me.