A certain chocolate bar manufacturer reduced the weight of Chocolate Bar M by 20 percent buy left the price unchanged. What was the resulting percent increase in the price per ounce of chocolate Bar M?  Choose the correct option
A) 20	B) 24	C) 25	D) 28	E) 30
assume 1oz candy cost $1 before.   now price remain same $1 but weight of candy reduces to 0.8 oz   new price of candy = 1/0.8= 
<gadget id="calculator">1/0.8</gadget>
<output>1.25</output>
1.25   price increase 25 %   25
<result>C</result>
A certain chocolate bar manufacturer reduced the weight of Chocolate Bar M by 20 percent buy left the price unchanged. What was the resulting percent increase in the price per ounce of chocolate Bar M?