Thats silly.Except for the IIMs and someIndian B SChools. , MBA is done with at least 4-5yrs of work exp.(Like ISB)
I myself am committed to doing an MBA and work exp is very imp.
Have you heard of all those huge starting salaries? The catch is that ALL of them have had prior work exp. Abroad , the avg age is 27-28 for doing an MBA.
Having work exp and then doing your MBA always gets you better posts + salaries than your fresher friends(You should do some research on this)
And as for 1 extra yr at BITS , u do 2 PS2 s , so your whole 5th yr is spent in the industry.