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Sunita her niece, Aishwarya for shopping to ‘Benetton’ to buy her a dress on the occasion of her birthday. She was delighted when on payment for the dress she got a discount voucher to get 20% off for a meal of ` 500 or above at a famous eating joint. Identify the technique of sales promotion used by the company in the above situation.            [Delhi 2017]

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