When a laser is directed toward a plate with two slits that are 0.3 mm apart, the interference fringes on a screen that is 1.5 m away are 3.2 mm apart. If the entire apparatus (laser, plate, and screen) is placed under water, how far apart will the interference fringes be?
a)2.56mm b)2.86mm c)2.41mm d)2.23mm e)2.71mm