![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
The author uses the example of rattle to show that ________. A) in toy-making there is a continuity in the sue of materials B) even the simplest toys can reflect the progress of technology C) even the simplest toys can reflect the progress of technology D) even a simple toy can mirror the artistic tastes of the time