Question: A = {, {}, {, {} } } Multiple Choice 1, as this set contains one set listed multiple times 3, as this set contains

A = {, {}, {, {} } } Multiple Choice 1, as this set contains one set listed multiple times 3, as this set contains exactly three different elements, each of which is a set 2, as this set contains exactly two different sets 4, as this set contains exactly four different elements, each of which is a set

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