In $2021,\_\_\_\_\_\_\_\_\_\_\_\_$ was$($werE$)$the least significant real asset$($s$)$ of U$.$S$.$ nonfinancial businesses in terms of total value.

Question $17$ options:

A$)$

equipment and software

B$)$

inventory

C$)$

real estate

D$)$

trade credit

E$)$

marketable securities