△是★的4倍，下面哪个算式是对的？请选择①②③④:A-N1Y'A6[4W9h.x1N0a;Y'}7v;e0M+O*c
①.△×4＝★9h.x1N0a;Y'}7v;e0M+O*c
②.△÷★＝49h.x1N0a;Y'}7v;e0M+O*c
③.★÷△＝49h.x1N0a;Y'}7v;e0M+O*c
④.△×★＝49h.x1N0a;Y'}7v;e0M+O*c