Commercial real estate loans are used as collateral in a type of asset-backed security called a commercial mortgage backed security (CMBS). Commercial real estate loans typically have very strong prepayment protections that essentially eliminate prepayment risk for lenders. This contrasts with the relative lack of prepayment protections in residential mortgage loans. Based on the presence of strong prepayment protection for commercial real estate loans, would you expect senior tranches in CMBS deals to have a large degree of negative convexity? Justify your answer.