In the following scenario, what could the engineers have done to keep the bridge from collapsing? 
The Tacoma narrows project required a bridge to be built over the Columbia river. The engineers accounted for aesthetic design by building a light roadbed. 
Unfortunately, the cables were not designed to withstand high winds speeds and the bridge collapsed.
A. Build a prototype of the bridge design and suspend weights from it to test its strength
B. Research different ways to build bridge roadbeds 
C. Write a report on the bridge ‘s aesthetic features 
D. Build a prototype of the bridge design and perform tests in a wind tunnel