Read the following statements: Assertion (A) and Reason (R). Choose the correct alternative from those given below:
Assertion (A): The equilibrium level of income is determined, when ex-ante spending and ex-ante output are equal.
Reason (R): The equilibrium level of income may or may not be the same as the full employment level of output.
Assertion (A): This is true because the equilibrium level of income is achieved when planned (ex-ante) spending equals planned (ex-ante) output, ensuring no unintended inventory changes.
Reason (R): This is also true because the equilibrium level of income is not necessarily the same as the full employment output. It can occur below or above the full employment level depending on aggregate demand.
Conclusion: Though both statements are true, Reason (R) does not fully explain Assertion (A), as equilibrium income is based on aggregate demand and not necessarily full employment.
For a hypothetical economy, assume the government increased infrastructural investment by ₹10,000 crore. 80% of additional income is consumed in the economy. Estimate the increase in income and the corresponding increase in consumption expenditure in the economy.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?