Minimum time period of bank statement required??

[mapple2014]

Hello,
What is the minimum required time period of bank statement?
I have some saving certificates wit my mother so can I show these as my proof of funds?
Thanks.

 

[scylla]

The funds need to be yours. They can't be jointly owned with your mother.

 

[mapple2014]

OK and what about the minimum month requirement of bank statement?