Mayor: the commuters from the nearby suburb of Coldstream perennially complain of a difficult commute to our downtown region. To address these concerns, we should install high-speed toll collector on the interstate between here and Coldstream, thus relieving any traffic snarls caused by the hand-operated toll booths.

Civil engineer: Over 95% of commuters from Coldstream take local roads, not the interstate, to our downtown region.

The civil engineer uses which of the following techniques in responding to the mayor?

A:pointing out that the premise could lead to an opposing conclusion

B:questioning whether the methods recommended would work in practice

C:citing evidence that calls into question the assumption of the argument

D:suggesting, by analogy, that the argument might not support the conclusion

E:presenting evidence that the proposed solution would have damaging unforeseen consequences