For the given outline identify the correct statement for defining classes for a program that stores electronic items' details. The program will have an electronic class with item code, item description, and item price. An item may be a gaming item with console details and brand.
a. Create a Gaming class as separate files and then an Electronic class which includes the Gaming. h file.
b. Create an Electronic class as separate files and then a Gaming class which includes the Electronic. h file.
c. Create separate files for the classes Electronic and Gaming and include both the h files in main. cpp.
d. Create one file containing all the classes and their definitions.