The portfolio in answer B represents the opposite exposure and benefits from a negative butterfly view, while in C, combining short barbell and long equally weighted portfolios leaves the investor with bullet portfolio exposure.
B选项sell the bullet portfolio and sell the barbell portfolio.
全是卖 不是在市场bear情况下获利吗 不是a negative butterfly
C选项combining short barbell and long equally weighted portfolios
不是 只剩下一个long medium-term头寸 吗