Option 1 -> Includes effective demand, which is not a component but rather represents equilibrium aggregate demand.
Option 2 -> Correctly identifies the three main components: ex-ante consumption (planned consumption), ex-ante investment (planned investment), and government spending.
Option 3 -> Incorrectly includes effective demand as a component of aggregate demand.
Option 4 -> Excludes ex-ante consumption which is a primary component of aggregate demand.
Hence, Option 2: (A), (B) and (C) only -> Aggregate demand for final goods is composed of ex-ante (planned) consumption, ex-ante (planned) investment, and government spending. In an open economy, net exports would also be included. Effective demand is not a component of aggregate demand; rather, it represents the level of aggregate demand at which it equals aggregate supply in equilibrium. The ex-ante terms emphasize planned expenditures that make up aggregate demand. -> correct