Which of the following is true about the inverted yiedd curve? a. Ifvestors seeking safe investments during an economio downtum will purchase longer-dated bonds over shorter-dated bonds, blading up the price of longer bonds and whilie dirving down their yield, making tho ylokt curve inverted b. Imverted yiekf ourve is upward sloping c. Shorler term bonds have lower yields than longer term bonds. d. Inverted curves point to economic expansion