Angelina ran a business in Gaborone, which specialised in producing computer software programmes. Refilwe andBasetsana both worked forAngelina for a period of three years. They were both described as self-employed and both paid tax as self-employed persons.Angelina provided all of their specialist computer equipment. Refilwe was required to work solely on the projectsAngelina provided, and he had to attend at her premises every day from 9 am until 5 pm.Basetsana usually worked at home and was allowed to work on other projects.Basetsana could even arrange for her work forAngelina to be done by someone else if she was too busy to do it personally. WhenAngelina lost her most important contract, which Refilwe had been working on, she decided to relocate the business to be closer to her one remaining large contract in Francistown some 400 kilometres away.As a result she told Refilwe andBasetsana that there would be no more work for them.Required:Advise Refilwe andBasetsana who are concerned: (a) why it is important to distinguish between contracts of service and contracts for services; (3 marks)