Do you know the meaning of Chinese phrase “耳旁风”?

Advanced Level 高级 (gāojí)
In China, parents always say to their children: “你不要总把我的话当作耳旁风.” Do you know the meaning of Chinese phrase “耳旁风”?
A. Deceive oneself
B. Walls have ears
C. What you hear may be false
D. Turn a deaf ear to something