Robert ate 13 chocolates, Nickel ate 4 chocolates. How many more chocolates did Robert ate than nickel?
Select:
A) A)4	B) B)7	C) C)9	D) D)5	E) E)2
13-4= 
<gadget id="calculator">13-4</gadget>
<output>9</output>
9. Answer is 9
<result>C</result>
Robert ate 13 chocolates, Nickel ate 4 chocolates. How many more chocolates did Robert ate than nickel?