The Expected Value of Sample Information (EVSI)is the Difference Between

The expected value of sample information (EVSI) is the difference between:

A) the posterior probabilities and the prior probabilities of the states of nature.
B) the expected payoff with perfect information (EPPI) and the expected monetary value for the best decision (EMV^*) .
C) the expected monetary value with additional information (EMV') and the expected monetary value for the best decision (EMV^*) .
D) the expected value of perfect information (EVPI) and the smallest expected opportunity loss (EOL^*) .