According to Walton and Rockoff, the Primary Reason for the Demise

According to Walton and Rockoff, the primary reason for the demise of the canal system was

A) excessive reliance on individual entrepreneurs so that a system of canals was never created.
B) excessive government regulation that kept canal rates and profits too low.
C) environmental damage from deforestation that left canals flooded at some times and dry at others.
D) competition from the railroads.