A state government is planning to construct a new bridge over a river to improve transportation infrastructure. The bridge's design includes a main span of 300 meters and two approach spans of 100 meters each. The estimated cost of constructing the main span is $2,500 per meter, while the cost of constructing each approach span is $1,500 per meter. Calculate the total cost of constructing the bridge. A) $1,050,000 B) $1,200,000 C) $1,350,000 D) $1,500,000