One way in which sequential and simultaneous testing differ is that… (choose one best answer)

A  simultaneous testing uses one test first then recalls those who test positive for a second test, whereas sequential testing screens the entire population with two tests.

B  sequential testing results in gain in the net sensitivity and the net specificity whereas simultaneous testing results in loss in the net sensitivity and the net specificity.

C  sequential testing results in gain in the net specificity but loss in the net sensitivity whereas simultaneous testing results in loss in the net specificity but gain in the net sensitivity

D  sequential testing uses two very expensive tests whereas simultaneous testing uses one inexpensive test and one very expensive test.