On Dec. 03 2018 the U.S. Treasury yield curve just inverted for the first time in more than a decade. The spread between 3- and 5-year yields fell to negative 1.4 basis points on that day, dropping below zero for the first time since 2007. Suppose that you have been retained by Fidelity as an investment analyst and are now asked to suggest investment assets to your major millionaire clients (Adam Sandler, Jay-Z, David Muir, Anderson Cooper, Aaron Judge, etc. ) by your head. Generally, your head would like to pick assets from five types of investment assets such stocks, bonds, commodities (e.g. oil, gold, silver, corn, sugar, coffee, etc.), real estate (e.g. residential houses, commercial buildings, etc.), and cash or cash equivalent. Based on your market insights and ability of analyzing economic indicators, which assets would be good for your clients investment? Why do you suggest so?