1. "If the bonds of different maturities are perfectly substitute, their interest rates are more likely to move together". Is this statement true or false or uncertain? Discuss using theory of expectation. Note: Your answers should be detailed with proper references. 2. Explain what it is a mortgage backed security (MBS) and how it is functions. Discuss how these securities caused 2008 USA financial crisis? Note: Your answers should be detailed with proper references.