In the following question, a sentence is given with four words marked as (A), (B), (C) and (D). These words may or may not be placed in their correct order. Four options with different arrangements of these words have been provided. Mark the option with the correct arrangement as the answer. If no rearrangement is required, mark option (5) as your answer. 

Thousands (A) and thousands of women (B) were switchboard phones  (C) before direct dial operators(D) were in use.