论域X={x1,x2,x3,x4}，模糊集合A表示高个子A={(x1,0.6),(x2,0.5),(x3,1),(x4,0.4)}，模糊集合B表示胖子B={(x1,0.5),(x2,0.6),(x3,0.3),(x4,0.4)},请用模糊集合表示不胖。

题目：论域X={x1,x2,x3,x4}，模糊集合A表示高个子A={(x1,0.6),(x2,0.5),(x3,1),(x4,0.4)}，模糊集合B表示胖子B={(x1,0.5),(x2,0.6),(x3,0.3),(x4,0.4)},请用模糊集合表示不胖。

A. {(x1,0.6),(x2,0.6),(x3,1),(x4,0.4)}

B. {(x1,0.5),(x2,0.5),(x3,0.3),(x4,0.4)}

C. {(x1,0.5),(x2,0.4),(x3,0.7),(x4,0.6)}

D. {(x1,0.3),(x2,0.5),(x3,0),(x4,0.6)}

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