运行以下Python代码：
import tkinter as tk def change_text(): label.config(text="Changed text") root = tk.Tk() label = tk.Label(root, text="Original text") label.pack() button = tk.Button(root, text="Change text", command=change_text) button.pack() root.mainloop()
当点击“Change text”按钮后，标签的文本会变成？（ ）
保持不变
"Changed text"
"Button clicked!"
"Original text"
