which code to use while filling rectification xml?

Hello,
I have received Intimation U/S 143(1) for AY:2009-10.
I would like to fill rectification for the same.

I have query regarding ITR-2 form, Part-A General Section, "Return File Under Section" column.
In that, there are 5 code defined as -

Code         How the return is filed                

11         Voluntarily before the due date            
12         Voluntarily after the due date        
13         In response to notice under section 142(1)
14         In response to notice under section 148    
15         In response to notice under section 153A / 153C

Which code I should use while filling rectification xml?