If A={1,2,3}A = \{1, 2, 3\}A={1,2,3}, what is A×∅A \times \emptysetA×∅?
{1,2,3}\{1, 2, 3\}{1,2,3}
{∅}\{\emptyset\}{∅}
∅\emptyset∅
{0}\{0\}{0}