The number of workers, f(x), needed to complete a building is given by the function below where x represents the number of floors in the building.

Select the correct statement.


When f(3) = 18, the 3 represents the the number of workers needed and the 18 represents number of floors.

When f(3) = 18, the 3 represents the number of floors and the 18 represents the number of workers needed.

When f(4) = 48, the 4 represents the number of floors and the 48 represents the number of workers needed.

When f(4) = 48, the 4 represents the the number of workers needed and the 48 represents number of floors.