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The correct answer is Option B.
The probability of a Type I error in testing a hypothesis is denoted by the Greek letter alpha, α.
The probability of a Type 2 error in testing a hypothesis is denoted by the Greek letter beta, β.
Option Β is difficult to quantify and it does not = 1 – α.
Finally, with respect to Option C, the only way to reduce the probabilities of both types of errors simultaneously is to increase the sample size, n.