Talk as you pay, pay as you talk-
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Tata Indicom
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MTS
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Aircel
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Idea
A
Correct answer
Explanation
Tata Indicom (Tata Teleservices) used the tagline 'Talk as you pay, pay as you talk' to promote their prepaid mobile services. This emphasized the flexibility of paying only for usage. MTS, Aircel, and Idea used different marketing slogans.