What is the main topic of the sentences below? "But I think, for one thing, the consistent inability to predict when the epidemic was going to increase and decrease, the absence of really strong epidemiological evidence, or a strong team of epidemiologists to participate in this, left the public pretty well disarmed." a. not enough doctors b. the influenza virus was unpredictable C. too many doctors, not enough help d. no support for the doctors​