Table 142 Monetary Aggregates of the U Assume an Original Balance Sheet: the Level of Total Reserves

Table 14.2 Monetary Aggregates of the U.S.Financial System
$\begin{array}{|l|r|}\hline\text { Item } & \text { Amount } \\\hline \text { Cash held by public } & \text { \$100billion } \\\hline\text { Transactions deposits } & \text { \$300billion } \\\hline\text { Required reserves } & \text { \$30billion } \\\hline\text { Excess reserves } & \text { \$0billion } \\\hline \text { U.S. bonds held by public } & \$ 475 \text { billion }\\\hline \end{array}$

Assume an original balance sheet: The level of total reserves in Table 14.2 is

A) $330 billion.
B) $30 billion.
C) $475 billion.
D) $315 billion.