Which sentence is written correctly?

A: My editor said to never use the word can’t when talking about a deadline.

B: My editor said to never use the word “can’t” when talking about a deadline.

C: My editor said to never use the word “can’t” when talking about a deadline.

D: My editor said to never use the word can’t when talking about a deadline.

C: My editor said to never use the word “can’t” when talking about a deadline.