Capital gains query

JAIDEEP SONPAL (a) (51 Points)

16 December 2011  
Query
 A commercial premises has been purchased by Mr.X under Pagri System in 2003, So he became tenant in 2003. Now this property under goes redevelopment & Mr. A receives commmercial premises in exchange for his old commercial premises in 2011.
Now this new premises he wants to sale within 3 months. So please throw some light on the following:- 
 
1) Whether there will be long term CG or Short term CG ?, as i am getting so contradictory views.
2) Cost of acquisition will be nil?
3) What will be Sale Consideration ?, if CG arises on just transfer of new premises in exchange of old premises.   
4) Deduction available under section 54F or 54EC or both?