Please help.
In which statement is the transition used correctly?
Select one:
a. Gold in California ignited interest in a railroad to reach the West. As a result, Americans disagreed on where to build the railroad.
b. Gold in California ignited interest in a railroad to reach the West. However, Americans disagreed on where to build the railroad.
c. Gold in California ignited interest in a railroad to reach the West. Therefore, Americans disagreed on where to build the railroad.
d. Gold in California ignited interest in a railroad to reach the West. Before this, Americans disagreed on where to build the railroad.