Answer:
A. sentence that presents a subject and makes claims about it to be proven later
B. the last sentence of an introduction
Step-by-step explanation:
Thesis statement is a statement which describes the reader about the subject that will be interpreted. Thesis statement helps in building a road map that is it tells the readers what to expect from the literary piece. Furthermore, thesis statement is used to make a claim for the dispute and is put up in the end line of the introductory paragraph.