The following information was obtained from the records of MT Suppliers, a partnership business with Mary and Tanya as partners, on 28 February 2023 (the end of the financial year): Mary's capital balance was R600 000 on 28 February 2023. She increased her capital contribution by R200 000 on 01 December 2022 (and this was recorded). She earns interest at a rate of 15% per annum. Which one of the following reflects Mary's interest on capital for the year ended 28 February 2023 ? A. R60000 B. R82 500 C. R90000 D. R67 500