As to the various pollutions,which o

As to the various pollutions,which of the following is NOT true?

• A.In the US,many dunes have been destroyed by the use of beach buggies.
• B.In the UK,many dunes have been seriously eroded by motor cycle rallying.
• C.In Spain,the removal of coral for commercial sale damages coastal regions.
• D. Footpaths in Snowdonia in Wales have been eroded by over-use.