Analyze the following code:

```
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class Test extends Application {
@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
HBox pane = new HBox(5);
Image usIcon = new Image("http://www.cs.armstrong.edu/liang/image/usIcon.gif");
Button bt1 = new Button("Button1", new ImageView(usIcon));
Button bt2 = new Button("Button2", new ImageView(usIcon));
pane.getChildren().addAll(bt1, bt2);

Scene scene = new Scene(pane, 200, 250);
primaryStage.setTitle("Test"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
}

/**
* The main method is only needed for the IDE with limited JavaFX
* support. Not needed for running from the command line.
*/
public static void main(String[] args) {
launch(args);
}
}```
a. Two buttons displayed with the same icon.
b. Only bt2 displays the icon and bt1 does not display the icon.
c. Only bt1 displays the icon and bt2 does not display the icon.
d. Two buttons displayed with different icons.

a Since images can be shared, both bt1 and bt2 display the same icon.