H1b Stamping Documents - Bank Statement

I am appearing for H1b visa interview first time. I was collecting documents and found that i need to produce Bank Statement to VO. But its not mentioned that how many months/year bank statements to be attached? Is it fine if i do get last 3 months statements with me?

Thanks in advance.

It is always better to have 12 months of your bank statement instead of three months. This should avoid unnecessary queries and helps for your previous employer’s pay stuff.

As per your suggestion, i got my 12 months statement. But again one query, Does VO need this bank statement verified by bank (Have Bank Stamp on it like that)?
I am using e-statement and got every month statement on my email and haven’t gone to bank for physical statement. Please suggest.