What Are the Differences Between Traffic Policing and Traffic Shaping

What are the differences between traffic policing and traffic shaping?

A) For traffic shaping, you can adjust the usage of the buffer for the traffic that exceeds the CIR.
B) For traffic policing, you can adjust the usage of the buffer for the traffic that exceeds the CIR.
C) For traffic shaping, the router buffers excess packets until the bandwidth is available again.
D) Traffic policing uses the token bucket algorithm and traffic shaping uses the SPD algorithm.
E) Traffic shaping is applied in the inbound direction and traffic policing is applied in the outbound direction.