notice under section 148

aman (a) (53 Points)

15 April 2019  
I have received notice under section 133(6) for A.Y. 2012-13 and after 1 month notice U/S 148 received with approval of PR. CIT.
My question is that whether i should demand reason for re opening the. case or should reply based on the required information mentioned in the 133(6).