If 4<x<6<y<10, then what is the greatest possible positive integer difference of x and y? Choose the correct choice from the following answers:
A) 3  B) 4  C) 5  D) 6  E) 7
4 &lt; x &lt; 6 &lt; y &lt; 10;   4 &lt; x   y &lt; 10   4 + y &lt; x + 10   y - x &lt;6.   Positive integer difference is 5 (for example y = 9.5 and x = 4.5)   Answer: 5.
<result>C</result>
If 4<x<6<y<10, then what is the greatest possible positive integer difference of x and y?