Given: Interface Doable { Public void doSomething (String s); } Which two class definitions compile? (Choose two.)
选项：

A: public abstract class Task implements Doable { public void doSomethingElse(String s) { } }
B: public abstract class Work implements Doable { public abstract void doSomething(String s) { } public void doYourThing(Boolean b) { } }
C: public class Job implements Doable { public void doSomething(Integer i) { } }
D: public class Action implements Doable { public void doSomething(Integer i) { } public String doThis(Integer j) { } }
E: public class Do implements Doable { public void doSomething(Integer i) { } public void doSomething(String s) { } public void doThat (String s) { } }