Hey aspirant, hope you are doing well!

Yes, a BCA degree holder can opt for MBA. The minimum eligibility for pursuing MBA is a graduation degree with minimum 50% marks from a recognised university and 45 % for reserved category candidates. Some universities don't ask for this minimum percentage of marks.Then you are supposed to give entrance exams as per the requirements of the universities. The most common entrance exam acceptable at many colleges is CAT ( Common admission test).

Further you can visit this link to know everything about the MBA exams https://www.google.com/amp/s/bschool.careers360.com/articles/top-12-mba-entrance-tests/amp

Hope it helps you! All the best for your future endeavours!