在划线处，下列哪些语句是合法的？

//类1定义
package com.ibm.oa.business;
import java.io.*;
 
public class Info
{
public void show() throws
NullPointException, IOException
{
}
}
//类2定义
package com.ibm.oa.client;
import java.io.*;
public class NewsInfo extends Info
{
       
----------------------------
        {
        }
}

问：在划线处，下列哪些语句是合法的？

A：public void show()

B：public String show() throws NullPointException, IOException

C：public void show() throws IOException

D：public void show() throws NullPointException, Runtime Exception

E：public void show() throws Exception, IOException