If white light is used in a Young’s double-slit experiment,
(a) bright white fringe is formed at the centre of the screen
(b) fringes of different colours are observed clearly only in the first order
(c) the first-order violet fringes are closer to the centre of the screen than the first-order red fringes
(d) the first-order red fringes are closer to the centre of the screen than the first-order violet fringes
