What is the writing pattern of Text A?

A. cause-and-effect patten
B. question-example-conclusion pattern
C. conparison-and-contrast pattern
D. qquestion-solution pattern

Based on the three questions raised by the author, Text A can be divided into three parts:Part I (para 1-4). After raising the question: "Who are the heroes among us? " and providing two examples in para 2 and 3, the author drew a conclusion that they are _________ heroes.Part II (para 5-8). The author raises the second question: Are _________ ___________ considered as heroes? It is followed by an example in para 6. In para 7 and 8, the author shows who were heroes in the past and who are heroes nowadays, it is a relation of __________(是一种写作手法).Part III (para 9-12). The author put forward the last question: "Do some people become heroes because of what happens to them as they try to help others-instead of what they actually make happen?" The author uses the example of ___________ to show he is indeed a hero. We expect first responders to rush toward _________, so when they die doing that, we should __________ their heroic efforts.Para 13 is the conclusion of the whole text. The _________ people can do _________ things.