![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
What can be learned about German y ?
A.
It has the hi g hest water cleanliness standard in Euro p e.
B.
It has the best natural swimmin g p ools in Euro p e.
C.
It has the best p urification s p ecialists in Euro p e.
D.
It has the cleanest rivers in Euro p e.