Regarding obc status after marriage

Sir, my father is a retired ex- government Ayurvedic doctor. His salary was always more than the limits suggested by national commission for backward class, hence I, myself, have always been considered under OBC creamy layer. I am a MBBS, MD doctor working at present in Government medical college as temporary employee with annual income of <Rs. 6 lakh. My father continues his private practice after retirement. My mother is a housewife. I got married 2 years back ( marriage certificate present). My wife is a self employed Homeopathic doctor. My wife's father is a self employed small shop owner (electronic business). Since her father's income has always been below the creamy layer limit, she has always been considered under OBC non-creamy layer. Now, my wife wants to appear in a entrance examination. I want to know, whether now, after 2 years of marriage, her OBC creamy/non- creamy status will be considered on the basis of her father's income or my father's income or total income of myself and my wife or my wife's income alone ??