Frank tried to solve an equation step by step. \qquad\begin{aligned} -5&=5(d+4) \\ -5&=5d+20&\green{\text{Step } 1} \\ 15&=5d&\blue{\text{Step } 2} \\ 3&=d&\purple{\text{Step } 3} \end{aligned} −5 −5 15 3 =5(d+4) =5d+20 =5d =d Step 1 Step 2 Step 3 Find Frank's mistake. Choose 1 Choose 1 (Choice A) A \green{\text{Step }1}Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b (Choice B) B \blue{\text{Step }2}Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed (Choice C) C \purple{\text{Step }3}Step 3start color #9d38bd, start text, S, t, e, p, space, end text, 3, end color #9d38bd (Choice D) D Frank did not make a mistake. .