Select the combination of characteristics that diagnose a plate boundary as a continent-continent collision.

Select the combination of characteristics that diagnose a plate boundary as a continent-continent collision. (i.e. Select ALL features that are shared by ALL continent-continent collision zones)
symmetric pattern of seafloor age across boundary
high broad mountain range
oceanic trench
mostly shallow earthquakes
no/few volcanoes
many deep earthquakes
no earthquakes
chain of volcanoes
low topographic ridge in ocean basin