Option 2: (C), (A), (B), (D) -> This represents the correct economic sequence. First, excess demand in the economy (C) creates inflationary pressure. This leads to a rise in prices (A) as demand exceeds supply. To control this inflation, the Central Bank intervenes by increasing margin requirements (B), which is a contractionary monetary policy tool that makes credit more expensive and less accessible. Finally, this policy action results in aggregate demand falling (D) as borrowing becomes costlier and purchasing power is constrained. This sequential chain demonstrates how central banks use monetary policy tools to manage demand-pull inflation. -> correct