问题如下：
Blanc’s calculations show that Perrin’s net wealth is:
选项：
A.less than his net worth.
B.equal to his net worth.
C.greater than his net worth.
解释：
A is correct.
Net wealth is calculated as follows:
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)
Perrin’s net wealth is less than his net worth because the sum of the present values of consumption and bequests is greater than the sum of the present values of future earnings and unvested pensions.
原文说未来的earning是要大于spending的，怎么会net welath is less than net worth???????
