What is the definition of morphology?

I- It refers to those aspects of anatomy that carry a functional meaning or value.
II- It is the study of the correlation between organic and functional aspects.
III- It is the study of animal organization.
IV- It is the study of the functioning of animals.
a) Only I and II are correct.
b) Only II and III are correct.
c) Only I and II are correct.
d) Only I and IV are correct.