What evidence from the archaeological site of Koh Ker demonstrates that statues had been stolen and illegally exported from Prasat Chen?
Select one:

a.
chisels and mallets used by the looters were still at the site.


b.
sandstone remnants of the sculpture were strewn around the site

c.
deep ruts left by the trucks that transferred the nearly life-size sculptures were still evident at the site.

d.
pedestals with the feet of the difference sculptures were still in situ at the site.