Suppose you are providing an online game server, for a game that you just invented. (a) You put in one server. Assume that this single serveris powerfulenough to provide with the speed for all the gamers at any time. Why is having a single server still a bad idea? (b) Why is it more expensive maintaining, say, a hundred servers? Give two reasons. (Don't talk about the buying cost). (c) Suppose there are 15 servers, that connect user with a service, and all of them are always online, and share the load. In general a page from these servers loads up in 5 seconds. If one of the servers crashes, how long will the page now take to load? Show the calculation