You have clinically diagnosed a patient as having SLE and ordered 6 tests, out of which 4 have come positive and 2 have negative. To know the probability of SLE at this point, you need to know:
A
Incidence of SLE and predictive value of each test
B
Incidence and prevalence of SLE
C
Relative risk of SLE in this patient
D
Prior probability of each test, sensitivity and specificity of each test