Which code segment should you use?

You are developing an ASP.NET MVC web application for viewing a photo album. The application is designed
for devices that support changes in orientation, such as tablets and smartphones. The application displays a
grid of photos in portrait mode. When the orientation changes to landscape, each tile in the grid expands to
include a description. The HTML that creates the gallery interface resembles the following markup.

If this CSS is omitted, the existing CSS displays the tiles in landscape mode. You need to update the portrait
mode CSS to apply only to screens with a width lessthan 500 pixels.
Which code segment should you use?

A.
@media resolution(max-width: 500px) {
. . .
}

B.
@media screen(min-width: Opx, max-width: 500px) {
. . .
}

C.
@media screen and (width <= 500px) {
. . .
}

D.
@media screen and (max-width: 500px) {
. . .
}