package geometry；  public class Hypotenuse {  public InnerTriangle it = new InnerTriangle（）；  class InnerTriangle {  public int base；  public int height；  }  }  Which is true about the class of an object that can reference the variable base？ （）

• A、 It can be any class.
• B、 No class has access to base.
• C、 The class must belong to the geometry package.
• D、 The class must be a subclass of the class Hypotenuse.