这个题目按公式怎么都算不对

问题如下：

You are holding 100 SkyTrek Company shares with a current price of $30. The daily mean and volatility of the stock return are 2% and 3%, respectively. VaR should be measured relative to initial wealth. The bid-ask spread of the stock varies over time, and the daily mean and volatility of this spread are 0.5% and 1%, reactively. The return is normally distributed. What is the daily liquidity-adjusted VaR (LVaR) at a 99% confidence level assuming the confidence parameter of the spread is equal to 2.58?

选项：

A.

$193.15

B.

$172.62

C.

$103.50

D.

$195.90

解释：