1.

If A = {a,b,{a,c}, ∅}, then A - {a,c} is

A. {a, b, ∅}
B. {b, {a, c}, ∅}
C. {c, {b, c}}
D. {b, {a, c}, ∅}
Answer» B. {b, {a, c}, ∅}


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