According to the passage about Tanvir’s phone repair stall in Chattogram, how long is the guarantee on copy screens?
Read the passage: Tanvir opened a small mobile phone repair stall in a busy market in Chattogram three years ago. At first he charged the same price for every screen replacement, but he soon found that he was losing money on expensive models. He now keeps a printed list of prices for each brand and model, which he updates every month as the cost of spare parts changes. Customers can also choose between an original screen and a cheaper copy, and Tanvir explains the difference honestly before starting work. He gives a three-month guarantee on all original parts but only one month on copies. His honest explanations, he believes, are the main reason so many customers return and recommend him to friends.
Correct answer D. One month
The passage says Tanvir gives a three-month guarantee on all original parts but only one month on copies, so copy screens carry a one-month guarantee.
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