does epistemology presuppose ontology or does ontology presuppose epistemology?

[© tweed]

I recently came across the question while reading Paul Tillich.  he takes the option 1.

[True Federalist (진정한 연방 주의자)]

Definitely not option 2.  I picked option 1, since epistemology presupposes a means of possessing knowledge, altho a case could be made for option 3 depending upon how narrow a scope one gives to the term ontology.