PT 5 S3 Q20

A certain viral infection is widespread among children, and about 30 percent ... ...

Which one of the following most helps to explain the success of the treatments with antibiotics?
(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.
(B) ...
(C) ...
(D) ...
(E) ...

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