PT 12 S2 Q12

In 1980 health officials began to publicize the adverse effects of prolonged ... ...

Which one of the following, if true, helps to resolve the apparent discrepancy in the information above?
(A) Before 1980 a considerable number of the people who developed melanoma as a result of prolonged exposure to the sun were over forty years of age.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Resolve/Explain" Questions, Set 2 - Difficult/Uncommon Mix (25Q)