What implicit message can most clearly be inferred from the article "What a
Bad Flu Season Could Cost the US Economy"?
O
A. Economically, the benefits of the flu vaccine are questionable.
O
B. Widespread flu vaccination would bring about substantial
economic gains.
O
C. Young children, the elderly, and people with certain medical
conditions benefit from the flu vaccine.
O
D. Unfortunately, vaccines are not always as effective as they could
be