Which Response Describes How Service-Providing Companies Would Most Likely Counter

Which response describes how service-providing companies would most likely counter increasing competition?

A) Firms would widen their range of supplementary services because reducing them is almost always disastrous.
B) Firms would emphasize supplementary services or may position themselves by greatly reducing those services.
C) Firms would focus entirely on their core service as supplementary services mostly do not attract customers.
D) Firms would reduce their supplementary services and may also offer a less rigorous form of their core service.