which strategy is least likely to improve per caipita GDP in Mali
1、lower tax rate
2、introduce policies that encourage the return of highly-education malian emigrant
3、build day care center to permit greater participation of women in the work force
从公式来看 人均GDp增长率应该等于技术增长率+人均资本增长率，我不太清楚这三个选项考的是哪个知识点，应该如何比较。
