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A supermarket offers delivery to the customer's house, but makes a charge for the service. The charge is 10% of the cost of the items purchased, plus an extra $1 if any of the items needs to be kept chilled. An additional $3 is added on to the charge if the delivery is over a distance of more than 10 km. Jeremy has had his shopping delivered to his house. The delivery cost was $6.40. What is the lowest possible total cost of Jeremy's items? A O $24 B O $60 C O $64 D ○ $34
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