Answer:
c. $30,000.
Step-by-step explanation:
The calculation of the total marketable debt securities reported in the balance sheet is given below;
= Mann Co cost + Kemo Co fair value + Fenn corp fair value
= $10,000 + $11,000 + $9,000
= $30,000
Hence, the total marketable debt securities reported in the balance sheet is $30,000
Therefore the option c is correct