Please give me answer

c) Sandy provided gardening services to her customer on 1 October 2020. She asked for payment upfront before performing the services and this was received on 29 September 2020. She raised her VAT invoice to the customer on 30 September 2020. Minoo provided VAT advice to her UK-based client on 27 September 2020. It was agreed that the work was complete at that time and nothing further from Rachelle was required. Rachelle subsequently raised a VAT invoice to her client on 8 October 2020 and the client paid promptly on 15 October 2020. With reference to the basic tax point and actual tax point rules for the supply of services, explain the tax point for both Sandy's and Minoos's supplies