A coin is tossed thrice. Let C be the event that head occurs in each of first two tosses. Let Y be the event that tails occurs in third toss. Let Z be the event that two tails occur in three tosses. Based on the above information, which one of the following statement is **TRUE**?

- X and Y are not independent
- Y and Z are dependent
- Y and Z are independent
- X and Z are independent