请问5-year fixed mortgage rate有可能比Bank of Canada的prime rate还低吗?不是insured mortgage (high-ratio mortgage)。比如现在Bank of Canada Prime rate 是4.5%,有没有mortgage拿到低于4.5%的?是不是普遍规律是任何时候拿到的mortgage rate一定不会低于Bank of Canada prime rate? 在这一点儿上是new mortgage 还是mortgage renewal有区别吗?谢谢!