下列代码创建一个新线程并启动线程。
Runnable target=new MyRunnable();
Thread myThread=new Thread(target);
其中，（ ）类可以创建target对象，并能编译正确。
单选题 (2.5 分)
A.
public class MyRunnable extends Runnable { public void run(){} }

B.
public class MyRunnable extends Object { public void run() {} }

C.
public class MyRunnable implements Runnable {public void run() {}}

D.
public class MyRunnable extends Runnable {void run() {}}

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