The Style Rule ____ Applies a 10-Pixel Margin Above and Below

Multiple Choice

The style rule ____ applies a 10-pixel margin above and below every h1 element,and a 20-pixel margin to the left and right.

A) h1 {margin: 20px 20px;}
B) h1 {margin: 20px 10px;}
C) h2 {margin: 10px 20px;}
D) h1 {margin: 10px 20px;}