问题如下：
A manager gets below information about a client, which conclusion can he come to?
- The total income of the client varies dramatically between $20,000 and $60,000 (after-tax) depending on the economic environment.
- For two years in the past three years, the client's total income after tax is less than $20,000.
- His son depends on his support for education with approximately $5,000 per year.
- His own living expense is approximately $10,000 per year.
- He has more than 12 years of investment experience, including stocks, commodity futures and derivatives.
- According to the standard risk assessment questionnaire, he has above average risk tolerance.
选项：
A.The client has low ability to take risk, but a high willingness to take risk.
B.The client has high ability to take risk, but a low willingness to take risk.
C.The client has low ability to take risk, and a low willingness to take risk.
解释：
A is correct.
The volatility of the client's income and the significant support for his son and his own need shows that his ability to take risk is very low.
The client's experience and his response to the risk assessment questionnaire indicates that he has higher willingness to take risk than average.
他的ability为什么是弱呢？就算只赚20000，也足以覆盖他的学费生活费了呀
