An entrepreneur has a project that requires a $10,000 initial investment. The project is risky and will produce revenue of $16,000 with probability 0.75 and revenue of $12,000 with probability 0.25. If the entrepreneur invests, then what is her expected revenue, minus the initial investment?
A. $5,000
B. $4,500
C. $8,000
D. $1,350