这段话的意思是要提供财力证明?

"Provide a parent s and/or sponsor s signature accompanied by bank official s signature below OR attach a notarized affidavit from parent and/or sponsor indicating amount of guaranteed support accompanied by bank statement or letter."

请问上面这段话的意思是要提供财力证明吗?是指银行出示的资金证明吗?在申请前就要提交真麻烦.