java private static

下列各种Java类的定义,哪些是错误的?

•       A 
class MyClass{ private int Val; public int getVal() { return Val; } }

  

•       B 
class MyClass{ private static int Val; public int getVal() { return Val; } }

  

•       C 
class MyClass{ private int Val; public int getVal() { return Val; } }

  

•       D 
class MyClass{ private static int Val; public static int getVal() { return Val; } }
  

应该都可以吧