HELP! Which sentence contains an item that is italicized incorrectly or should be italicized?

a. The author on the morning news show talked about his book, Cooking for One. ( cooking for one is italicized)

b. He named his boat Ella Mae after his grandmother. ( ella mae is italicized)

c. When I was in kindergarten, I used to watch every episode of Reading Rainbow. ( reading rainbow is italicized)

d. In Field and Stream, I read an article called Why Fifty Million People Fish. ( field and stream and why fifty million people fish are italicized)

I think the answer is D but I'm not 100% sure.