In "Run, Kate Shelley, Run," why does the trestle bridge collapse into Honey Creek?
A.
A speeding train had jumped off the tracks and crashed into the bridge.
B.
The bridge had been built long ago by people who did not do a very good job.
C.
Lightning struck had struck the bridge, setting it on fire.
D.
Nearly a week of rain had caused the creek's waters to rise violently and weaken the bridge.