Which of the following Color Format is a CSS3 HSL value with a fourth value to set the alpha channel value for the color to define the opacity of the element?$?

Which of the following Color Format is a CSS3 HSL value with a fourth

1.	Which of the following Color Format is a CSS3 HSL value with a fourth value to set the alpha channel value for the color to define the opacity of the element?$?
A.	RGB Color
B.	RGBa Color
C.	HSL Color
D.	HSLa Color
Answer» E.