I want to know about the best career option after my graduation.

Hi, since you have not mentioned your specialization, I shall list out the popular post-graduate options for you:

1. General

An M.B.A. degree course is the most desired general choice. You can do an M.B.A in various disciplines like Marketing, Finance, Human Resources, and Sports Management etc.
2. Commerce
The Master of Commerce (M.Com) degree will be suitable if you are interested in accounting, finance, and trade topics.   
3. Science

• M.Sc (Master of Science) in various branches like Surgery, Pathology, Orthopaedics etc.   
• M.Tech, especially in Engineering (several branches) and Computer Science.

4. Arts  

• M.A. (Master of Arts) in numerous streams such as Economics, Languages, Journalism, Psychology, Communication, Music etc.   

You should choose a course that you feel best suits your preferences and capabilities. Good luck!