(a) ABC restaurant is looking for a solution to collect information about customers, such as items purchased, demographic information, and expressed and implied preferences in the Web. By means of this information in the Web to better market their products and services. There is an application of Artificial Intelligence able to help. State this Artificial Intelligence application and briefly explain it. (5 marks) (b) ABC company finds that it is facing many poorly structured problems. Using patterns appears to be a solution for it. In the viewpoint as ABC's information technology consultant, what key concept of Artificial Intelligence Application does it need? Briefly explain it. (5 marks) (c) Suggest TWO areas of use with natural language processing. (5 marks) (d) In an MS Access QBE form, if you wish to search for records in which Product Codes end with PEX, what should you type in criteria of Product Code? Meanwhile, if you wish to arrange Product Codes from Z to A, what should you type in sort of Product Code? (3 marks) (e) In an MS Excel formula or function, if Cell A7 has be locked by mixed addressing so as to apply formula paste vertically later, how should the cell reference of A7 be written? (2 marks)