What is the double-entry for each of the following transactions and adjustments in Company X in the accounting year ending 31 December 2018:

Required: (a) The sale of goods on 1 November 2018 on credit for 12,300. These goods cost 7,000 (b) Rent of 6,000 paid on 1 December 2018 for the three months ended 28 February 2019 (c) Electricity of 600 for the three months ended 31 January 2019 invoiced to Company X on 5 February 2019