How Will the Heading Be Styled If the Style Contains

Multiple Choice

How will the heading be styled if the style contains the following declarations?
H2 {
Font-size: 1em;
Background-color: yellow;
}
H2 {
Font-size: 2em;
}

A) All h2 headings will appear in a font size of 1em and on a yellow background.
B) All h2 headings will appear in a font size of 2em and on a white background.
C) All h2 headings will appear in a font size of 1em and on a white background.
D) All h2 headings will appear in a font size of 2em and on a yellow background.