Martha estimated the quotient of −71.81 and −8.02 using rounding to the nearest whole number.

9 StartLongDivisionSymbol 72 EndLongDivisionSymbol minus 72 = a remainder of 0 and quotient of 8.

What was Martha’s error?

She should have rounded the dividend to 70.
She should have rounded –8.02 to –8.
She should have divided 8 by 72.
She did not make an error.