Which one of the following sentences uses colons incorrectly​?
A.
The recipe called for a rare​ ingredient: truffles.
B.
I can think of something better to​ do, such​ as: taking a walk or reading a book.
C.
Jarrod already knew what his answer would​ be: yes.
D.
You should bring the following to the​ exam: two​ pencils, a​ bluebook, a​ calculator, and a dictionary.