The work of a student to find the dimensions of a rectangle of area 6 + 8x and width 2 is shown below:

step 1: 6 + 8x
step 2: 2(4) + 2(6x)
step 3: 2(4 + 6x)
step 4: dimensions of the rectangle are 2 and 4 + 6x

in which step did the student first make an error and what is the correct step?
step 3; 2 + (4 + 6x)
step 3; 2 + (4 ⋅ 6x)
step 2; 2(4) + 2(4x)
step 2; 2(3) + 2(4x)