Ans is C
The Crossover point of a fuzzy set is the element in U at which its membership function is 0.5
The Support of a fuzzy set F is the crisp set of all points in the Universe of Discourse U such that the membership function of F is non-zero.
if membership is 1 then it is core of a fuzzy set
alpha cut (or λͅ -cut) can be anything from 0 to 1 (0<= λͅ<=1)
μA(x)=0.5