28. The following appeared in the editorial section of a local newspaper.

“Commuter use of the new subway train is exceeding the transit company’s projections. However, commuter use of the shuttle buses that transport people to the subway stations is below the projected volume. If the transit company expects commuters to ride the shuttle buses to the subway rather than drive there, it must either reduce the shuttle bus fares or increase the price of parking at the subway stations.”

不知道大家AA28找的错误是什么，我看了范文的两点错误：

1 the author assumes that reducing shuttle fares and increasing parking fees are the only available solution to the problem

2 the author assumes that reducing shuttle fees and increasing parking fees are mutually exclusive alternatives.

我怎么看了半天觉得这两个错误跟一个错误差不多啊，请教大家都找出什么错误了，谢谢！