Why Are Results of Screening Tests Referred to as Presumptive

Multiple Choice

Why are results of screening tests referred to as presumptive?

A) If the test result is positive,it may be assumed that the disease is present.
B) The test results lead to recognition of symptoms.
C) The tests detect previously unrecognized signs and symptoms.
D) Because screening test results have less than 100% accuracy,referral for further tests is necessary.