An online auction charges sellers a flat fee of $1.20 and 2% of the amount of the sale. Let A be the amount of the sale in dollars and C be the charge of the online auction. Explain whether the solutions A=−5 and C=1.1 are viable.(1 point) Responses The solutions are viable because the amount of the sale is an integer. The solutions are viable because the amount of the sale is an integer. The solutions are viable because the amount charged is positive. The solutions are viable because the amount charged is positive. The solutions are not viable because the amount charged is not a whole number. The solutions are not viable because the amount charged is not a whole number. The solutions are not viable because the amount of the sale cannot be negative. The solutions are not viable because the amount of the sale cannot be negative.

The correct response is: The solutions are not viable because the amount of the sale cannot be negative.