问题如下：
Shelly tells her investment manager that she has recently been reading about traditional and economic balance sheets, would like to clarify her understanding on calculation of net wealth. Which of following formulations are correct to calculate her net wealth?
选项： Net wealth = Net worth +(PV of future
earnings + PV of unvested pension benefits) -(PV of consumption goals + PV of
bequests)
Net wealth = Net worth -(PV of future earnings + PV of unvested pension benefits) +(PV of consumption goals + PV of bequests)
C.Net wealth = PV of future earnings + PV of unvested pension benefits +PV of consumption goals + PV of bequests
解释：
A is correct.
考点: Economic (Holistic) Balance Sheet
解析：Net wealth 净财富的计算方法如下:
Net wealth = Net worth from the traditional balance sheet +(Present value of future earnings + Present value of unvested pension benefits) – (Present value of consumption goals + Present value of bequests)
pension benefit分成两种，一种是vested，一种是unvested。
unvested应算入HC，而vested应算入FC
那么，这道题写的有点问题吧，左侧没有算vested pension啊
