Question

In using a colon to introduce a list, be sure the clause before the colon is a complete sentence (can stand alone). Which sentence below uses a colon correctly?
A. Good preparation for interviews includes: arranging ahead of time, being on time, being positive.
B. When interviewing, remember: arrange ahead of time, write down questions, double-check answers.
C. Be prepared before interviewing: arrange ahead of time, write down questions, double-check answers.