Which of the following statement is correct?
A、To separate items in a series, we should use comma (,).
B、To show the omission of one or more letters in a contraction, we should use apostrophe (’ ).
C、To indicate the exact words of the quoted speaker/writer, we should use comma (,).
D、To indicate articles in books, newspapers or magazines, chapters in a book, short stories, or poems, we should use quotation marks (“ ”).