Fertilised or not?

[George Michael]

Which one out of these four eggs is a viable/fertilised egg? Thank you!! -see embedded image-

 

[ChickenCanoe]

I can't tell on 2 and 4 but 1 and 3 look fertile to me.

 

[George Michael]

I couldn't focus the pictures more than this. The pictures didn't come out so well. I actually thought number 1 and 2 were the fertile ones and not 3 and 4. Because 1 & 2 had the typical bullseye structure while 3 & 4 only had the empty blastodisc with irregular uncircular shape. They are bantam eggs so the yolk is quite small and hard to photograph without digital reflex camera equipped with macro lens and the blastodisc wasn't nicely centered in the image as it was in case number 1. Anyone else wanting to express his or her opinion I will be glad to hear.