Fuzzy sets 14

0. Which of the following is/are crisp sets for X = {x₁, x₂, x₃, x₄}?
A = {(x₁,0), (x₂,0), (x₃,0), (x₄,0)}
B = {(x₁,1), (x₂,1), (x₃,1), (x₄,1)}
C = {(x₁,0.5), (x₂,0.4), (x₃,0.7), (x₄,1.1)}
D = {(x₁,-0.2), (x₂,0.4), (x₃,0.6), (x₄,0.1)}
E= {(x₁,0), (x₂,1), (x₃,0), (x₄,1)}
F = {(x₁,0.1), (x₂,0.5), (x₃,0.2), (x₄,0.07)}

Answer
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Array

Option : B
Explanation :

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