Which sentence in the following excerpt from Amy Tan’s “Rules of the Game” shows that Waverly practices caution? The alley was quiet and I could see the yellow lights shining from our flat like two tiger's eyes in the night. I climbed the sixteen steps to the door, advancing quietly up each so as not to make any warning sounds. I turned the knob; the door was locked. I heard a chair moving, quick steps, the locks turning—click! click! click!—and then the door opened. "About time you got home," said Vincent. "Boy, are you in trouble." He slid back to the dinner table. On a platter were the remains of a large fish, its fleshy head still connected to bones swimming upstream in vain escape. Standing there waiting for my punishment, I heard my mother speak in a dry voice. "We not concerning this girl. This girl not have concerning for us." Nobody looked at me. Bone chopsticks clinked against the inside of bowls being emptied into hungry mouths.