A watch loses 2 minutes in every 24 hours while another watch gains 2 minutes in every 24 hours. At a particular instant, the two watches showed an identical time. Which of the following statements is correct if 24-hour clock is followed?

• A. The two watches show the identical time again on completion of 30 days.
• B. The two watches show the identical time again on completion of 90 days.
• C. The two watches show the identical time again on completion of 120 days.
• D. None of the above statements is correct.