CSS allows you to change the size of text. Which of the following statements about the font-size property is true?
a. The font-size property is deprecated in HTML5.
b. The default size of text for the font-size property is 10 pixels.
c. The font-size property should be used whenever possible instead of headings (h1 through h6).
d. Headings (h1 through h6) should be used whenever possible instead of the font-size property.