Refer to the Following Payoff Table

Multiple Choice

Refer to the following payoff table:

There is an option of paying $100 to have research done to better predict which state of nature will occur. When the true state of nature is S1, the research will accurately predict S1 60% of the time. When the true state of nature is S2, the research will accurately predict S2 80% of the time.
What is the expected value of perfect information?

A) 40
B) 45
C) 75
D) 85
E) 100