A', 'B' and 'C' are partners in a partnership firm named A, B & C. 'A' retires from the firm without giving any public notice. Thereafter, an existing creditor lends Rs. ten lakh to the firm on the basis of his knowledge that 'A', 'B' and 'C' are the three partners in the firm. This amount remains unpaid by the firm. The creditor wants to recover the unpaid loan amount from the firm.

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 */ } }