$$What is the amount of any available$-$for$-$sale investment securities reported in the balance sheet? c$.$ Is there an amount you can't find in the balance sheet but that you know must be there? $2.$ a$.$ How are unrealized gains or losses on available$-$for$-$sale investments reported: in net income or OCl? b$.$ In what note does GM indicate that policy? $3.$ a$.$ Are any investments reported by the equity method? b$.$ In what note does GM provide an in$-$depth discussion of them? $4.$ What amounts from equity method investments are reported in the $2019$ income statement? Note: Enter your answers in millions.