Which of the following property specifies the color of an outline?

color-outline
outline-color
outline-style-color
none of the mentioned

The correct answer is: B. outline-color

The outline-color property specifies the color of an outline. It is a CSS property that is used to specify the color of the outline of an element. The outline is a line that is drawn around an element to indicate its boundaries. The outline-color property can be used to change the color of the outline,

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or to remove the outline altogether.

The color-outline and outline-style-color properties are not valid CSS properties.