Question 6: Principles of Functional and Logic programming languages (25 marks) a) In what fundamental different way does the process of computation in Functional Programming Language differ with that in an imperative language? Mention any three functional programming Languages ( 9 points) b) What are the differences between CONS and LIST functions of Scheme? (6 points) c) Give and explain any two concepts of logic programming. Mention one logic PL. (6 points) d) What is the basic concept of declarative semantics? (4 points)