Suppose you have been asked to implement software solutions for each of the applications listed below. For each application, indicate which data type (List, Set, Map, Stack, Queue, Priority Queue) would be most effective in solving the problem.

a. A compiler that uses a symbol table which stores the name, type, size, and location of each variable in a program.

b. A photo management application that allows you to create and edit slideshows that display a collection of photos in the order you want.

c. A barber shop where customers can pay a higher price for faster service.

d. A process scheduler for an operating system that runs jobs using a first-come-first-served rule.