Case 4-3 Sam Is Trying to Decide the Best Way to Design

Case 4-3
Sam is trying to decide the best way to design the background of his web page. He would like to add background images and background styles to his design. He needs to understand how browsers load a background image as well as learn about background style properties

-Sam wants to change the position of an image on his web page.He wants to place the background image 30 pixels to the right of the element's left border and center it vertically.The style used ____.

A) background-position: 30px;
B) background-position: 10px;
C) background-position: 20px;
D) background-position: center, 30px;