11. The average cable television company offers its customers 50

channels, but new fiber-optic lines will enable telephone companies

to provide 100 to 150 television channels to their customers for

the same price as cable companies charge for 50. Therefore, cable

companies will be displaced by the new companies within a few

years.

Which of the following, if true, most helps to strengthen the

argument?

(A) The initial cost per household of installing new fiber-optic

television service will exceed the current cost of installing cable

television service.

(B) The most popular movies and programs on channels carried by

cable companies will also be offered on channels carried by the

fiber-optic lines owned by the telephone companies.

(C) Cable television companies will respond to competition from the

telephone companies by increasing the number of channels they

offer.

(D) Some telephone companies own cable companies in areas other

than those in which they provide telephone services.

(E) The new fiber-optic services offered by telephone companies

will be subject to more stringent governmental programming

regulations than those to which cable companies are now subject.

答案是B，我觉得C更对阿

我看解释更是云里雾里

Choice C weakens the argument, not strengthens it.

本题的结论是"cable companies will be displaced by the new companies within a few years. "

"by increasing the number of channels they offer" cable companies的竞争力会提高, 它们就不会被displace了. 所以C weakens the argument.