Let A = {q, s, u, v, w, x, y, z}, B = {q, s, y, z}, 
and 
Specify the following set.A ? B
A. {v, x}
B. {q, s, u, v, w, x, y, z} or A
C. {s, u, w}
D. {s, u, v, w, x, z}
Answer: B
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