Option 3: (A) - (II), (B) - (III), (C) - (IV), (D) - (I) -> The correct matching is: (A) Expenditure method measures GDP through total spending on final goods and services, representing GDP in the phase of disposition (how income is used/disposed). (B) Income method calculates GDP by summing all factor incomes (wages, rent, interest, profits), representing GDP in the phase of distribution (how income is distributed among factors). (C) Value added method measures GDP by adding value created at each production stage, representing GDP in the phase of production. (D) Value of output - sales equals inventory investment, which is the unsold stock accumulated when production exceeds sales. These three methods (expenditure, income, and production) are different ways of measuring the same GDP, representing different phases of the circular flow of income. -> correct