Based on the following tables and graph, how should the investor split their funds between Rf security and ORP portfolio to achieve their final combination return of 1.80% ? Note that Rf=0.3% A. 0.30 into ORP and 0.70 into Rf B. 0.83 into ORP and 0.17 into Rf C. 0.40 into ORP and 0.60 into Rf D. 0.92 into ORP and 0.08 into Rf