A2. If a merchant sells a product for 180 euros, they incur a $10 \%$ loss. For how many euros must they sell the product to achieve a $5 \%$ profit?
(A) 190
(B) 200
(C) 207
(D) 207.9
(E) 210
A2. The original price is $\frac{180 \cdot 100}{90}$ and amounts to 200 euros. If the merchant wants to sell the product with a $5 \%$ profit, they must sell it for 210 euros.