Darth Vader, Inc. is looking at setting up a new manufacturing plant in Death Star to produce TIE fighters. The company bought some land a decade ago for $40 billion. The land was appraised recently for $30 billion. Darth Vader wants to build the new plant on this land; the plant will cost $50 billion to build, and the site requires $3 billion worth of grading before it is suitable for construction. What should be the proper incremental cash flow amount to use as the initial investment (CF0)?

1. $43 billion.

2. $60 billion.

3. $63 billion.

4. $83 billion.

5. $93 billion.