问题详情

The revenue from lottery ticket sales is divided between prize money and the various uses shown in the graph labeled "Proceeds." In 1997, what per-cent of the money spent on tickets was returned to the purchasers in the form. of prize money？
A．23.5%
B．50%
C．60%
D．66%
E．74%请帮忙给出正确答案和分析，谢谢！