Which specialisation should I take in MBA?

This would depend a lot on your personality traits & interest areas. Each MBA specialization needs specific personality traits for excelling in the profession say if you are outspoken and like traveling, meeting people, take target pressure then Marketing could be a preference & is you are a peoples

It is totally based on your interest as in you want to do in finance, marketing, HR, IT or anything else. You can see in which topic you are strong and then pursue a course related to it. All the MBA courses have a lot of value if you pursue them from top institutes.