Identify the property that justifies each step asked about in the answer area below.\text{Line 1: }\phantom{=}Line 1: =\,\,(4x)(3y)(4x)(3y)\text{Line 2: }\phantom{=}Line 2: =\,\,4\cdot (x\cdot 3)\cdot y4⋅(x⋅3)⋅y\text{Line 3: }\phantom{=}Line 3: =\,\,4\cdot (3\cdot x)\cdot y4⋅(3⋅x)⋅y\text{Line 4: }\phantom{=}Line 4: =\,\,(4\cdot 3)(x\cdot y)(4⋅3)(x⋅y)\text{Line 5: }\phantom{=}Line 5: =\,\,12xy12xy