What Does It Mean for Ecocentrists to Regard a Tree

What does it mean for ecocentrists to regard a tree or a fish as a moral patient?

A) It means that we must care for these life forms as a medical doctor cares for patients.
B) It means that we must care for these life forms for their own sake, and not just for the sake of how it might ultimately impact us.
C) It means that we can have indirect, rather than direct duties to these life forms.
D)  It means that we must, like physicians, "do no harm" when it comes to these life forms.