Provide the solution of following problem scenarios by implementation of appropriate design patterns: Question 1: Lets suppose you have to design a generic theme for various kinds of web applications i.e. E-commerce, Social network and online forums etc. The theme must ensure that developer fol-lows a particular hierarchy in following order for each app: a) Add Header information b) Add footer information b) Add advertisement c) Add gallery d) Configure backend Implement the most appropriate design pattern to full-fill above requirements.