![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
For a norma distribution curve, which of the descriptions is wrong ( )
A.
a single-peak and bell shape curve
B.
Its tails approach but never actually touch the X axis
C.
the mean, median are all in the same place in the center of the distribution.
D.
centered at the Y axis
E.
the graph is always symmetric