When monochromatic light is used, an interference pattern of fringes appears on a screen that is positioned a distance $D$ from two slits separated by $a$. The fringe spacing is $x$. Now both $a$ and $D$ are doubled. What is the fringe spacing in the new pattern?
- A$\frac{x}{2}$
- B$x$
- C$2x$
- D$4x$