Teenagers are often priced out of the labor market by the government-mandated minimum-wage level because employers cannot afford to pay that much for extra help. Therefore, if Congress institutes a subminimum wage, a new lower legal wage for teenagers, the teenage unemployment rate, which has been rising since 1960, will no longer increase.

Which of the following, if true, would most weaken the argument above?

(A) Since 1960 the teenage unemployment rate has risen when the minimum wage has risen.

(B) Since 1960 the teenage unemployment rate has risen even when the minimum wage remained constant.

(C) Employers often hire extra help during holiday and warm weather seasons.

(D) The teenage unemployment rate rose more quickly in the 1970’s than it did in the 1960’s.（B）

(E) The teenage unemployment rate has occasionally declined in the years since 1960.

怎么个思路，我怎么选不出答案。更恐怖的是，我咋一看答案觉得嗯，是应该是B，再看的时候觉得B都有点加强的味道了。

请NN指导。

原文说的是unimployement 是和HIGH pay 有关, B说pay 没变的时侯,unimployement 也在增长.说明不只是HIGH pay .可能还有其它原因.就是weaken原文.