You dont understand the lesson. You keep talking in the class. A. Unless you keep talking in the class, you won't understand the lesson. B. Provided you kept talking in the class, you would understand the lesson. C. As long as you kept talking in the class, you would understand the lesson. D. If you keep talking in the class, you won't understand the lesson. *Giải thích giúp mình với ạ !!