An ester (A) with molecular formula C₉H₁₀O₂ was treated with excess of CH₃MgBr and the compound so formed was treated with conc. H₂SO₄ to form olefin (B). Ozonolysis of (B) gave ketone with formula C₈H₈O which shows positive iodoform test. The structure of (A) is?
A. C₆H₅COOC₂H₅
B. CH₃OCH₂COC₆H₅
C. CH₃CO−C₆H₅−COCH₃
D. C₆H₅COOC₆H₅