Which of the following statements are true/ false?<br>1. In the market economy, the prices are determined by the level of demand and supply in the market.<br>2. Mixed economy is an economic system in which both the private and public sector have equal roles to play.<br>3. Planned economy is also known as a centralised economy, controlled economy or command economy.<br>4. In the market economy, governments do not have much role to play.

A. public class Circle implements Shape { private int radius; }B. public abstract class Circle extends Shape { private int radius; }C. public class Circle extends Shape { private int radius; public void draw(); }D. public abstract class Circle implements Shape { private int radius; public void draw(); }E. public class Circle extends Shape { private int radius; public void draw() { /* code here */ } }F. public abstract class Circle implements Shape { private int radius; public void draw() { /* code here */ } }