Which statement about call centers in the United States is accurate?

There has been some shrinkage in the number and size of call centers due to the rise in self$-$service web or speech recognition technologies.

Call$-$center functions have largely been returned to the U$.$S$.$ from countries like India and Mexico.

Call$-$center functions have largely been brought back in$-$house from third$-$party companies that specialize in call$-$center operations.

Call centers have replaced instant messaging as the technology of choice for resolving the complaints of younger customers.