采用紫外-可见分光光度法测定对乙酰氨基酚的含量时，若稀释体积为V(ml)，取样量为W(g)，吸光度为A，含量计算公式是( )

A、含量\% = \frac {E_{1cm}^{1 \% } \times V}{A \times 100 \times W} \times 100 \%
B、含量\% = \frac {A \times E_{1cm}^{1 \% } \times V}{100 \times W} \times 100 \%
C、含量\% = \frac {A \times W}{E_{1cm}^{1 \% } \times 100 \times V} \times 100 \%
D、含量\% = \frac {E_{1cm}^{1 \% } \times 100 \times W}{A \times V} \times 100 \%
E、含量\% = \frac {A \times V}{E_{1cm}^{1 \% } \times 100 \times W} \times 100 \%