On subjecting mesityl oxide to the iodoform reaction, one of the products is the sodium salt of an orgnic acid. Which acid is obtained?
A. `(CH_(3))_(2)C=CH-CH_(2)COOH`
B. `(CH_(3))_(2)CH-COOH`
C. `(CH_(3))_(2)C=CH-COOH`
D. `(CH_(3))_(2)C=CH-CO-COOH`