Santiago tried to evaluate an expression step by step. ( 4 ⋅ 1 0 9 ) ⋅ 0.00003 = ( 4 ⋅ 1 0 9 ) ⋅ ( 3 ⋅ 1 0 − 5 ) Step 1 = ( 4 ⋅ 3 ) ⋅ ( 1 0 9 ⋅ 1 0 − 5 ) Step 2 = 12 ⋅ 1 0 14 Step 3 = = = (4⋅10 9 )⋅0.00003 (4⋅10 9 )⋅(3⋅10 −5 ) (4⋅3)⋅(10 9 ⋅10 −5 ) 12⋅10 14 Step 1 Step 2 Step 3 Find Santiago's mistake. Choose 1 Choose 1 (Choice A) A Step 1 Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b (Choice B) B Step 2 Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed (Choice C) C Step 3 Step 3start color #9d38bd, start text, S, t, e, p, space, end text, 3, end color #9d38bd (Choice D) D Santiago did not make a mistake.