뭐 살까? = anything to buy?
I heard a phrase from a Korean drama that a man is going to the supermarket when he calls his wife and asks '뭐 살까?'

I would like to know which one is correct :
(1) 뭐 살까?
(2) 뭘 사까?
(3) 뭐 사까?

Thanks.

Question

뭐 살까? = anything to buy?
I heard a phrase from a Korean drama that a man is going to the supermarket when he calls his wife and asks '뭐 살까?'

I would like to know which one is correct :
(1) 뭐 살까?  
(2) 뭘 사까? 
(3) 뭐 사까?

Thanks.

Answer

The first and second one can be right. But the second one sounds like emphasizing 'what'.  And third one can be right as informally.