Q2 [1 pt]: Write the following assertion to this schema: Product(maker, model, type) PC(model, speed, ram, hd, price) hd: hard disk Laptop(model, speed, ram, hd, screen, price) Printer(model, color, type, price) a) No manufacturer of PC's may also make laptops? b) A manufacturer of a PC must also make a laptop with at least as great a processor speed? c) If a laptop has larger main memory than a PC, then the laptop must also have a higher price than the PC? d) If a relation Product mentions a model and its type, then this model must appear in the relation appropriate to that type