Which import statement, when inserted independently at (1), will make the code compile?

Select the one correct answer.

(a) import app.*;

(b) import app.Window;

(c) import java.lang.*;

(d) import java.lang.String;

(e) import static app.Window.frame;

//File: Window.java package app; public class Window ( final static String frame = "Top-frame"; } // File: Canvas.java package app; // (1) INSERT IMPORT STATEMENT HERE. public class Canvas { private String str = frame; }