National Cleaner Corp. needs a $1.5 million loan to finance a project that pays off next period. There are two projects available, A and B. You are a lending officer and know about the projects but cannot control the borrower's project choice. A will yield a payoff of $6.75 million with a probability of 0.6 or zero with a probability of 0.4. B will pay off $8 million with a probability of 0.5 or zero with a probability of 0.5. Everybody is risk-neutral and the riskless interest rate is 10%. You consider designing a loan contract that involves the use of collateral; however, collateral is costly and $1 of the borrower's collateral is worth only 90 cents to your bank. Suppose a secured loan is offered. What is the interest rate for the secured loan? O 27.08% O 57.33% O 120% O 83.33%