Directions: Study the informations given below and answer the question given below:

A, B, C, D, E and F are cousins. No two cousins are of the same age, but all have birthdays on the same date. The youngest is 17 years old and the oldest E is 22. F is somewhere between B and D in age. A is older than B. C is older than D.

Q: Which of the following must be true if exactly two of the cousins are between C and F in age?