单项选择题

在偏大型柯西分布隶属函数对应聘者的复试成绩进行量化时,如果令f(3) = 0.7,其它不变,则待定常数α, β, a, b为(        )。

A.α = 0.8591,β = 1.9643,a = 0.5873,b = 0.0548
B.α = 1.9643,β = 0.8591,a = 0.5873,b = 0.0548
C.α = 1.9643,β = 0.8591,a = 0.0548,b = 0.5873