Zinc roofing weighs 1.6 pounds per square foot. Jose wants to order 357.85 square feet of roofing. Before ordering, he calculates how much weight that will put on his roof. His calculation is shown below. 357.85 times 1.6 = 214710. 214710 + 35785 = 178.925

Why is his answer incorrect?
He did not line up the decimal points in the factors.
He put the decimal point in the answer in the wrong place.
He did not use a placeholder when multiplying by one.
He did not multiply 6 by 357.85 correctly.