Consider the effect on the angular separation of the fringes in a Young's double slit experiment due to the following operations: (i) the screen is moved away from the plane of the slits, (ii) the separation between the two slits is increased till fringes are observed. Which of the following options is correct? (A) It remains constant in both cases. (B) It decreases in both cases. (C) It remains constant in (i) but decreases in (ii). (D) It decreases in (i) but remains constant in (ii).