3. (25) SSE Bank intends to make a 1-year loan of $2 million to a B-rated firm. We denote the loss of the loan by a random variable L. Assume the distribution of L follows a normal distribution with mean $0.6 million and standard derivation $0.4 million. The cost of funds for SSE Bank is 9%. The servicing fee to be charged to the loan is 0.9% of the loan's principal. The incurred operating cost is 0.1% of the loan's principal. Using the cost of fund as a benchmark in RAROC model, determine the minimum loan interest rate to make the loan acceptable