If x and y are prime numbers such that x > y > 3, then x^2 − y^2 must be divisible by which one of the following numbers?	Select:  A) 3  B) 4  C) 5  D) 9  E) 12
If x=8 and y=6, then x^2-y^2=28 and 28 is divisible only by 4 from the options, thus it must be correct.   Answer: 4.
<result>B</result>
If x and y are prime numbers such that x > y > 3, then x^2 − y^2 must be divisible by which one of the following numbers?