Lauer's have decided to expand their retail shop by building on a vacant lot they own.The company will build a new building at an estimated cost of $1.8 million.The firm will spend another $400,000 on the parking and access roads.The land was purchased ten years ago at a cost of $900,000.Today, that land is worth 2.8 million.What is the cost of this expansion project?

a. $3.1 million

b. $5.0 million

c. $2.2 million

d. $4.6 million

e.$5.9 million