When the price of a product was decreased by 10%, the number of products sold increased by 30%. What was the increase on the total revenue?

• A.  \[\text{23 }\!\!%\!\!\text{ }\]      
• B.  \[\text{16}\frac{2}{3}%\]     
• C.      \[15%\] 
• D.      \[17%\]