请问老师，2015年真题 Q8个人IPS真题 B小问 关于为什么immediate fixed annuity不适合投资者的一个原因答案给的是"Low interest rate environment: When buying a fixed annuity the investor locks in payments based on current interest rates. Purchase of a large fixed annuity when interest rates are low will lock in relatively low payments."我的问题是，假如利率是低的话，那annuity pmt应该是相对更高才对啊，这里有点没明白，感谢老师！
