Hello,
Your question is not clear to me. Please specify what is e and c.
As far as I understood your question, You are asking about the scope of mba.

Today, the world is growing in the fields of marketing, industrialization, financing and education. The MBA programme has specially been designed for the candidates who are executing the administration of the industries or related field.

You can check this link out for scope of mba.

http://www.mastersportal.eu/articles/340/7-very-good-reasons-to-do-an-MBA.html

Cheers !!

Graduation course has a limited effect on the decision of doing an MBA. In MBA you learn about all the aspects of Management which includes marketing, finance, HR, operations etc. Some companies prefer electronics and communications as graduation course but mostly companies do not ask for any particular specialisation in graduation and hence everyone gets equal opportunities.

MBA as a course imparts a strong theoretical foundation in business concepts, provides practical opportunities (via internships, group assignments and individual projects) to test what students learn in the class, builds hard-skills in the areas of management and leadership, polishes a range of soft-skills like communication, motivation and negotiation, opens up global opportunities for career growth, allows MBA students to start an independent business after graduating. After MBA you can expect a job as a Manager or an Analyst in Marketing, Finance, HR, Operations and other domains