Given the task definition and input, reply with output. In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

Context: Calla (Bog Arum Marsh Calla Wild Calla and Water-arum) is a genus of flowering plant in the family Araceae containing the single species Calla palustris. It is native to cool temperate regions of the Northern Hemisphere in central eastern and northern Europe (France and Norway eastward) northern Asia and northern North America (Alaska Canada and northeastern contiguous United States).It is a rhizomatous herbaceous perennial plant growing in bogs and ponds.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Athlete, 3)Plant, 4)Company, 5)EducationalInstitution
3