下面,正确的说法是 ________ 。 01 public class B { 02 public int a=10; 03 private int b=20; 04 protected int c=30; 05 public int getB(){ 06 return b; 07 } 08 } 09 public class A extends B { 10 public int d; 11 public void tryVariables() { 12 System.out.println(a); 13 System.out.println(b); 14 System.out.println(getB()); 15 System.out.println(c); 16 } 17 }