Which sentence is punctuated incorrectly?

Lennie felt a cold coming on, so he went shopping for supplies: throat lozenges, tissues, cough medicine, and vitamin C.

The author who is speaking today has written several works on historical subjects, including: the Civil War, the French Revolution, and the exploration of the Arctic.

One commodity is crucial to the future of Phoenix and other cities located in the desert: water.***

Please buy the following at the grocery store: a pound of steak, three potatoes, a watermelon, and a case of soda.

5 answers

No, C is punctuated correctly.

Oh okay hm... Is it B? I looked back at the text and B doesn't look right.

Yes. In B, there should be no colon.

Okay thank you for your help!!

You’re welcome.