Which CSS3 code fragment uses a pseudo-element?

A.
p: : first-letter {font-weight: bold;}
B.
div>p {font-weight: bold;}
C.
p. first-letter {font-weight: bold;}
D.
div+p {font-weight: bold;}
Explanation:
http://www.html5code.nl/css3-tutorials/css3-tutorial-css3-selectors/
https://www.w3schools.com/css/css_pseudo_elements.asp
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New questions from September 2017 new exam batch:
http://optimumfiles.com/ProgrammingInHTML
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