<tr height="54" style="height:40.5pt">超市的果蔬销售结构占比是23%，商品毛利贡献度是2.34%，试问其商品毛利率是多少？</tr><br/> ,<tr height="54" style="height:40.5pt">20%</tr><br/> ,<tr height="54" style="height:40.5pt">18%</tr><br/> ,<tr height="54" style="height:40.5pt">15%</tr><br/> ,<tr height="54" style="height:40.5pt">54%</tr><br/> A、<tr height="54" style="height:40.5pt">20%</tr><br/> B、<tr height="54" style="height:40.5pt">18%</tr><br/> C、<tr height="54" style="height:40.5pt">15%</tr><br/> D、<tr height="54" style="height:40.5pt">54%</tr>