I know the answer is B for the following question, I just don't understand why.

Rons Barbeque purchased a lot in Eagleton six years ago at a cost of $98,700. Today, that lot has a market value of $128,900. At the time of the purchase, the company spent $6,500 to level the lot and another $12,000 to install storm drains. The company now wants to build a new facility on the site at an estimated cost of $494,200. What amount should be used as the initial cash flow for this project?

A) $611,400

B) $623,100

C) $641,600

D) $592,900

E) $582,400