The following statements are related to patents. Which of the following statements that are not correct.
Statement I Patent is aimed to encourage economic and technological development.
Statement II Patent can be protected only for a limited period.
Statement III The law of patent is international in its operation.
Statement IV When the patent right expire, the technology becomes public property.

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 */ } }