I am confused with the above problem. If I connect all 3 windings additively, I will get 3V1/3V2. But, I don't think there will be any change in kVA rating. It should still remain Q. The answer given in my workbook is option A. Please help me with this problem.
EDIT: It is not a homework problem. I am preparing for an exam called GATE(Graduate Aptitude Test in Engg). It is a previously asked problem in the exam.