Sam Is Trying to Decide the Best Way to Design

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 and 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 an element's left edge and 30 pixels down from the top edge. Identify the correct style that Sam should use.

A) background-position: 30px;
B) background-position: 30px vertical;
C) background-position: 30px 30px;
D) background-position: t_edge, 30px;