I think A , because teachers would always want for the best and by doing this we get a more deeper understanding of the book we are arguing about , and we also get to know about the opponent teams book . This would enhance our book knowledge .
Answer B. (Future perfect tense is used, as the sentence refers to something that will be completed by some point in the future.) is correct.
B is correct because the event which will happen in the future (the baking of the cakes) will also have ended.
I will have baked is a correct form of future perfect, because future perfect is made with the following construction:
Subject + will have + past participle
A verb used in forming the tenses, moods, and voices of other verbs. The primary auxiliary verbs in English are be, do, and have ; the modal auxiliaries are can, could, may, might, must, shall, should, will, and would.