The net of a solid figure is shown below:

Four squares are shown side by side in a row. The second square has a square above it and a square below it. All the squares have side length equal to 4 inches

Which calculation will give the total surface area of the solid figure?
6 × 4 × 4 square inches
4 × 6 × 6 square inches
6 × 4 × 4 × 4 square inches
4 × 6 × 6 × 6 square inches