What is the organizational structure of paragraph 3? A. It makes a general claim about Spartina and then provides specific evidence to defend that claim against objections to the claim. B. It presents a general characterization of Spartina and then describes particular features on which this characterization is based. C. It reports a widely held view about Spartina and then considers evidence both for and against that view. D. It presents a general hypothesis about Spartina and then lists specific evidence that disputes that hypothesis.