破产法贯彻对债权人公平清偿的原则，破产财产在优先拨付破产费用后，对所欠职工工资和税款，均按同一比例予以清偿。 ( )

An investor owns a stock portfolio that closely follows the Standard & Poor’s 500 Index (S&P500). He purchases one S&P500 stock index put option. The investor’s position is now portfolio insurance with the following characteristics: Portfolio position: LONG S&P500 Portfolio purchase price:1427.21 Option position: LONG 1 put option Underlying asset:S&P 500 Index Exercise price : 1225 Premium :3 Expiration date : November If the expiration-day price of S&P500 were 1200, then the expiration-day profit/loss for the portfolio insurance would be:

A．

B．

C．