Write the following in the programming language Scheme/DrRacket.

The rev function takes two lists as arguments. It returns a list that is the concatenation of the reverse of the first list with the second list. For example, (rev (1 2 3) (4 5)) should return (3 2 1 4 5). (a) (2 points) Define the rev function by using case analysis and recursion. (b) (1 point) Now we want to define a reverseList function, which reverses a list. Define reverseList based on the rev function.