22 (3 points) A project plan is for constructing 100 tool booths along a stretch of highway in 5 months at a cost of one million dollars. Assume that the plan is for uniform construction rate and spending. Three months after project start, 50% of the toll booths have been completed. What is the project's earned value at this point in time (three months after project start)? Question 22 options: One million dollars $500,000 $600,000 $50,000