Which is the function of cell wall?<br>1. Provides shape to the cell.<br>2. Protects the cell from mechanical damage and infection.<br>3. Helps in cell to cell interaction.<br>4. Provides barrier to undesirable macromolecules.<br>5. Imbibes water.

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 */ } }