PT 26 S3 Q24

Over the last 25 years, the average price paid for a new car has steadily ... ...

Which one of the following, if true, most weakens the argument?
(A) There has been a significant increase over the last 25 years in the proportion of individuals in households with more than one wage earner.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Weaker" Questions, Set 3 - Difficult/Uncommon Mix (25Q)