Simplify: $$23 \times 2(45 - 15) + 168 \div 4 \div 2 - (11)^2$$
$$23\times2(45-15)+168\div4\div2-(11)^2.$$
$$=23\times2\times30+168\div4\div2-121.$$
$$=23\times2\times30+168\div8-121.$$
$$=23\times2\times30+21-121.$$
$$=1401-121.$$
$$=1280.$$
A is correct choice.
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