According to the philosopher John Scottus Eriugena,

A. God was completely distinct from the world he had created.
B. the natural world that could be perceived by the senses had been created by the Devil.
C. nature could be divided into four categories, one of which was equivalent to Platonic forms.
D. nothing in nature could exist unless it took a physical form, so God and the soul must both have a material existence, and ideas had no independent existence.

C