Q: 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: Cordylanthus tenuis is a species of flowering plant in the broomrape family known by the common name slender bird's beak. It is native to the US states of California Oregon and Nevada where it grows in woodland and forest. It erects a spindly stem which may exceed a meter in height with sparse narrow leaves a few centimeters long and is sometimes sticky with glandular secretions. The plant is greenish and tinted with yellow or purple coloration.
Question: The document can be classified to which topic?
Options: 1)Building, 2)Company, 3)WrittenWork, 4)Plant, 5)Album
A:
4