Refer to the Accompanying National Income Data (In Billions of

question 122

Multiple Choice

$$\begin{array} { | l | r | } \hline \text { Gross Private Domestic Investment } & \$ 1,593 \\\hline \text { Personal Taxes } & 1,113 \\\hline \text { Transfer Payments } & 1,683 \\\hline \text { Taxes on Production and Imports } & 695 \\\hline \text { Corporate Income Taxes } & 213 \\\hline \text { Personal Consumption Expenditures } & 7,304 \\\hline \text { Consumption of Fixed Capital } & 1,393 \\\hline \text { US Exports } & 1,059 \\\hline \text { Dividends } & 434 \\\hline \text { Government Purchases } & 1,973 \\\hline \text { Net Foreign Factor Income } & 10 \\\hline \text { Undistributed Corporate Profits } & 141 \\\hline \text { Social Security Contributions } & 748 \\\hline \text { US Imports } & 1,483 \\\hline \text { Statistical Discrepancy } & 50 \\\hline\end{array}$$ Refer to the accompanying national income data (in billions of dollars) . Corporate pro?ts are equal to

• A) $442 billion.
• B) $532 billion.
• C) $621 billion.
• D) $788 billion.

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Definitions:

Head Instance Variable

A variable, typically in a linked list or similar data structure, that holds a reference to the first element or node.

Null

A special marker used in programming to denote that a variable does not hold any valid object or value at a particular time.

Preorder Processing

A type of tree traversal where each node is processed before its child nodes.

Root Node

The topmost node in a tree data structure, from which all other nodes descend.