When is PET scanning most helpful in the diagnosis algorithm of lung cancer?

Q. When is PET scanning most helpful in the diagnosis algorithm of lung cancer?

A.            when the probability of cancer is intermediate (i.e., about 5% to 65%)

B.            when the probability of cancer is intermediate (i.e., about 25% to 65%)

C.            when the probability of cancer is intermediate (i.e., about 25% to 35%)

D.            when the probability of cancer is intermediate (i.e., about 5% to 25%)

Answer: when the probability of cancer is intermediate (i.e., about 5% to 65%)