下列各种情况下，埋在地下的铸铁管道被腐蚀的速度最慢的是（　　）

A．在潮湿、疏松、透气的土壤中

B．在含铁元素较多的酸性土壤中

C．在潮湿、致密、不透气的土壤中

D．在干燥、致密、不透气的土壤中

Editorialist: Additional restrictions should be placed on driver’s licenses of teenagers because teenagers lack basic driving skills. Even though drivers of age nineteen and younger make up only 7 percent of registered drivers, they are responsible for over 14 percent of traffic fatalities. Each of the following, if true, weakens the argument that teenagers lack basic driving skills EXCEPT:

A．Teenagers tend to drive older and less stable cars than other drivers.

B．Teenagers and their passengers are less likely to use seat belts and shoulder straps than others.

C．Teenagers drive, on average, over twice as far each year as other drivers.

D．Teenagers cause car accidents that are more serious than those caused by others.

E．(E) Teenagers are likely to drive with more passengers than the average driver.