In response to '4) Not enough is known about how nontransportation costs vary with distance.', does 'There's more than enough known concerning the ways in which costs associated with nontransportation change according to the distance.' serve as a counterstatement?
4) Not enough is known about how nontransportation costs vary with distance.###There's more than enough known concerning the ways in which costs associated with nontransportation change according to the distance.