GMAT Sentence Correction (SC) | Re: Although a number of excellent studies narrate the development of dome

Although a number of excellent studies narrate the development of domestic technology and its impact on housewifery, these works do not discuss the contributions of the women employedby manufacturers and utility companies as product demonstrators and publicists , who initially promoted new and unfamiliar technology to female consumers.

Option A is correct because relative pronoun"WHO" correctly modifies"demonstrators and publicists" .

please help in collecting Kudos.
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