If x and y are prime numbers such that x > y > 4, then x^2 − y^2 must be divisible by which one of the following numbers?	Choose the correct choice from the following answers:
A) 7	B) 8	C) 5	D) 9	E) 13
If x=7 and y=5, then x^2-y^2=24 and 24 is divisible only by 8 from the options, thus it must be correct.   Answer: 8.
<result>B</result>
If x and y are prime numbers such that x > y > 4, then x^2 − y^2 must be divisible by which one of the following numbers?