If 7<x<9<y<15, then what is the greatest possible positive integer difference of x and y? Choose the correct choice from the following answers:	A) 7	B) 4	C) 5	D) 6	E) 3
Let x=7.1 and y=14.1   Greatest possible difference=14.1-7.1= 
<gadget id="calculator">14.1-7.1</gadget>
<output>7</output>
7   7nswer 7
<result>A</result>
If 7<x<9<y<15, then what is the greatest possible positive integer difference of x and y?