Tucson Housing Market Slows in 2006

The train was speeding along at 100 mi. per hour then it slowed to 50 mi. per hour. 
a. did the train stop
b. did the train crash
c. did the train slow down
d. did the train continue to move forward
Pick the two answers matching what the train did.
Amid U.S. realty cool-down, Ariz. is ’warm’
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