A new program in genetics engineering at Gentex will require $10 million in the capital. The chief financial officer (CFO) has estimated the following amounts of financing at the indicated interest rates: Common stock sales Use of retained earnings Debt financing through bonds $5 million at 13.7% $2 million at 8.9% $3 million at 7.5% Historically, Gentex has financed projects using a D-E mix of 40% from debt sources costing 7.5%, and 60% from equity sources costing 10.0%. 

Compare the historical WACC value with that for trus current genetics program.