For esch of the foliowhg pains of inwestments, indicate which wocld alwarys be preferred by a rational inveator laspuming that these are the anly investments avaibble to the imestorl Select "indeterminate" if you are ind tterent between the two a Portfolio A r 1.18% = 20% Portiolio Br=14%a=20% Partiolo. A Preforence Portfolio B Indeterninate b. Portholio Cr=15% o =18% Portfolio Dr =13 Ke 8% Portfolio C Prelerence: Portfolio D Indeterminate CPortlolio E r=14Ko=16% Portfolio F,r=14k0=10N Portiolio E. Prefermoe Portfoliof indetertuirate