___________ farming is a system that is helpful in restoring, maintaining and enhancing the ecological balance.
(Choose the correct alternative to fill in the blank):
List-I | List-II | ||
|---|---|---|---|
| A | Money supply is exogenously given. | I | Post-Keynesian school |
| B | Money supply is demand driven and credit led. | II | Say’s law |
| C | Rational expectation. | III | Monetarism |
| D | Supply creates its own demand | IV | Neo-classical school |
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).