Examveda
Examveda

A WATS arrangement

A. is always less expensive than flat-rate service

B. is less expensive than flat-rate service only when the number of calls is large and the duration of each is short

C. is less expensive than flat-rate service only when the number of calls is small and the duration of each is long

D. is never less expensive than flat-rate service

E. None of the above

Answer: Option B


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