public class Threads 1 { 
intx=0； 
public class Runner implements Runnable { 
public void run（） { 
int current = 0； 
for（int=i=0；i<4；i++）{ 
current = x； 
System.out.print（current + “， “）； 
x = current + 2； 
} 
} 
} 
public static void main（String[] args） { 
new Threads1（）.go（）； 
} 
public void go（） { 
Runnable r1 = new Runner（）； 
new Thread（r1）.start（）； 
new Thread（r1 ）.start（）； 
} 
} 
Which two are possible results？（）

public class NamedCounter { 
private final String name； 
private int count； 
public NamedCounter（String name） { this.name = name； } 
public String getName（） { return name； } 
public void increment（） { coount++； } 
public int getCount（） { return count； }
public void reset（） { count = 0； } } 
Which three changes should be made to adapt this class to be used safely by multiple threads？ （）