A. [img]https://360kao.oss-cn-hangzhou.aliyuncs.com/xingce/2018/2137006-options-formulas-2709.png[/img]
B. [img]https://360kao.oss-cn-hangzhou.aliyuncs.com/xingce/2018/2137006-options-formulas-2710.png[/img]
C. [img]https://360kao.oss-cn-hangzhou.aliyuncs.com/xingce/2018/2137006-options-formulas-2711.png[/img]
D. [img]https://360kao.oss-cn-hangzhou.aliyuncs.com/xingce/2018/2137006-options-formulas-2712.png[/img]