Molecular Screening Is Now Being Used to Detect Individuals with Early

Molecular screening is now being used to detect individuals with early stages of TB because

A) skin testing is unreliable and needs refrigeration that many countries may not have.
B) vaccination with Bacille Calmette-Guérin does not protect against multidrug resistance.
C) many countries do not have disposable needles for skin testing.
D) it can detect infection earlier than chest X-rays and sputum sampling.
E) it can be used more safely on children with the disease.