Thesis statement plays an essential role in composing a successful argumentative writing. Please select from the following statements on thesis statement the incorrect one. 
A、A thesis statement is either the direct answer to an essay prompt or a concise summary of the writer’s views on the issue in the prompt.
B、Thesis statement is also an argument but, more specifically, it is the main argument that all other arguments are connected to.
C、Thesis statement is usually only one sentence long.