问题如下：
Hill refers his friend, Richard Morrison, the former CEO of Masury Bridge and Iron (MBI), to Keller to discuss his wealth goals.
Keller realizes that the Morrisons’ decision making is influenced by psychological considerations and decides to use a goal-based planning approach. Keller constructs the table below to simplify the discussion at their next scheduled meeting.
Table：Morrison Family Wealth Distribution
Keller discusses a yield enhancement strategy and asks Morrison to establish a liquidation value at which he would be willing to sell 10% of his position in MBI.
State and discuss the tool Keller is most likely recommending to Morrison.
解释：
Keller is most likely recommending writing covered calls against 10% of Morrison’s shares in MBI. Morrison would sell call options with a strike price that is above the current price of MBI and in return receive premium income (yield enhancement) from the sale of the call options. The strategy effectively allows the investor to establish a liquidation value (the strike price) for the shares he/she writes call options against. If the stock price increases above the strike price at maturity, the calls will be exercised and Morrison will deliver his long shares. He would receive a total sum equal to the strike price of the calls and the premium from the initial sale of the calls. If MBI closes at or below the strike price at expiration, the calls will expire worthless and Morrison will retain the option premium and the long shares. One of the most significant benefits of implementing a covered call writing program is that it can psychologically prepare the owner to dispose of his/her shares.
请问哪里提示应该用cover call strategy呢？
