For this question only, assume Ocean purchased the following marketable debt securities$,$ at par, earlier this year.

Available$-$for$-$Sale Securities Trading Securities Held$-$to$-$Maturity Securities

Cost $$25,000$ $$10,000$ $$50,000$

Fair value at year$-$end $$26,000$ $$8,400$ $$52,500$

At year$-$end, what total amount should Ocean report on its balance sheet for these marketable debt investments only?