The correct option is
1 only
Explanation
In macroeconomics, the determination of equilibrium income (or output) is analyzed using the relationship between Ex Ante (planned) Aggregate Demand (AD) and Ex Ante Aggregate Supply (AS). Equilibrium is established at the point where the planned expenditure by all sectors of the economy equals the planned level of production.
Statement-wise Analysis
- Statement 1 is Correct: Equilibrium income is achieved when Ex Ante Aggregate Demand equals Ex Ante Aggregate Supply. At this point, producers' plans to supply goods and services coincide exactly with households' and firms' plans to purchase them, resulting in no unintended changes in inventory.
- Statement 2 is Incorrect: If Ex Ante Demand exceeds Ex Ante Supply (Excess Demand), consumers are demanding more goods than producers have planned to supply. This leads to an unintended decrease in inventories (decumulation). To restore inventory levels and meet the higher demand, producers will increase production in the next cycle, not decrease it.
- Statement 3 is Incorrect: Unintended accumulation of inventories occurs when goods produced are not sold. This signifies that Aggregate Supply (planned output) is higher than Aggregate Demand. The statement incorrectly suggests that accumulation implies demand is higher than output; in reality, higher demand would lead to inventory depletion.
Key Takeaway
Equilibrium Income requires Planned AD = Planned AS. Disequilibrium is corrected through inventory signals: Unintended Accumulation (AD < AS) leads to production cuts, while Unintended Decumulation (AD > AS) leads to production increases.