Fill in the blanks to make the background color of tge element with id="mystyle" black using hexadecimal color definition

Question

css

Answer 1

#mystyle {
background-color: #000000;
}

Answer 2

#mystyle{
background-color:#000000;
}

Answer 3

#mystyle {
background-color: #000000;
}

Answer 4

#mystyle
{background-color: #000000;}

Answer 5

#mystyle
background-color
#000000