Refer to the information provided in Figure 6.2 below to answer the question(s) that follow. 
Figure 6.2
-Refer to Figure 6.2. Assume Mr. Lingleʹs budget is AC. At which point does Mr. Lingle spend exactly his income?
Definitions:
Secretary of Defense
The head of the Department of Defense, responsible for overseeing all agencies and functions of the government directly related to national security and the United States armed forces.
Hillary Clinton
An American politician, diplomat, lawyer, writer, and public speaker who served as the 67th United States Secretary of State, a U.S. senator from New York, and a First Lady of the United States.
Robert Gates
A former U.S. Secretary of Defense who served under Presidents George W. Bush and Barack Obama, known for his efforts in directing American foreign policy and military operations.
21st Century
The current century, beginning in the year 2001 and ending in 2100, marked by significant technological advancements, globalization, and various global challenges.
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