$1\mathrm{.}1$

Consider this command run at the terminal. Assume filter.exe and meow.exe are $C++$ programs.

$./$filter$.$exe $$ cats.txt $|./$meow$.$exe

Which of the following are true?

Reading from cin within the code for filter. exe would yield data from cats.txt$.$

Standard output from filter. exe is being redirected to an output file.

If the meow.exe program prints "MEOW" to cout, this will show at the terminal.

The input via cin to meow.exe is determined by the output of filter.exe to cout.