What are the three aspects proposed by Donabedian's methodology to evaluate the quality of medical care?

I- Structure, which constitutes the anatomy of the service, all the necessary means to provide care.
II- Process, which includes all activities performed by providers.
III- Result, which is the impact produced on the level of health of the users.
a) Only I and II are correct.
b) Only III is correct.
c) I, II, and III are correct.
d) Only I and III are correct.