The information is for the following questions, and the company names are fictitious. GE Ventilator is a company specializing in hospital-grade ventilation systems. It sells the ventilators to hospitals. Hospitals borrow from GE Ventilator to pay for the ventilators. The loan contracts usually specify that hospitals will make interest rate payments and principal repayments to GE ventilator for several years. As the demand for ventilators is booming, GE Ventilator has decided to raise (borrow) $300 million from the corporate bond market to expand its business. To facilitate the bond issuance, GE Ventilator has practised the following two tasks. First, it has updated its issuer credit rating from S&P, which is now rated BB. Second, the GE ventilator has hired Goldhawk (an investment bank) to design alternative borrowing structures. Goldhawk has identified two yields: the average yield for GE Ventilator's 5-year senior non-secured bond is 7%; the yield of US Treasury bonds with the same maturity is 3% Borrowing structure one: GE Ventilator issues $300 million corporate bonds backed by its loans to hospitals. If fully subscribed, the bond will be coded GEV2020, Borrowing structure two: GE Ventilator sets up a special purpose entity (SPE), Ventilation Trust, and sells the loans to hospitals to Ventilation Trust. Backed by the hospital loans, Ventilation Trust issues a $300 million ABS (asset-backed security) bond. If fully subscribed, the bond is coded VT-SPE-2020. Question: What is the credit spread for the issuer, GE Ventilator? Do you need any assumption for the issuer's credit spread