问题如下：
The selection of risk modification methods is to:
选项：
A.maximize return at highest cost.
B.minimize risk at the lowest cost.
C.weigh benefit and cost based on risk tolerance.
解释：
C is correct.
Risk modification methods includes risk avoidance, risk acceptance, risk transfer and risk shifting. No one has an outstanding advantage, so, when choosing the risk modification method, one need to weigh benefits and costs of each method.
老师这个知识点是什么呀？
