#3 is for sure cockrel.  I have 10 BR and 3 are cockerels so some experience.
	
		
			
		
		
	
				
			Your chicken's comb is already bigger and redder than this one's... So I agree with others who said cockrel. Sorry...Hey! A lady’s on Instagram showed me a picture of her Australorp when it was 10 weeks old and it looks exactly like mine!
Here is a picture of hers.
View attachment 1625198
	