Which one of the following sentences contains an unnecessary colon?
 A. Here's the question on all of our minds: Will our team be able to defeat their arch rivals tonight?
 B. I wrote my shopping list and put: milk, soup, chicken, and ice cream on it.
 C. She wants one thing: a new job.
 D. Carlos has three goals in life: to graduate from college, own his own home, and work in the computer industry.