Telephone Sellers plc sells prepaid telephone cards to customers. Telephone Sellers then pays the telecommunications company, TeleExpress, for the actual use of its telephone lines. Assume that Telephone Sellers sells £4,000 of prepaid cards in January 2010. It then pays TeleExpress based on usage, which turns out to be 50% in February, 30% in March, and 20% in April. The total payment by Telephone Sellers for TeleExpress lines over the 3 months is £3,000. Indicate how much income Telephone Sellers should recognize in January, February, March, and April.