b) Walter Simpson is a welder specializing in making and installing grills. For the past six months he has had only one client - Strong build Limited who build houses. Simpson does all the grillwork. He owns his own welding plant. Strong build Limited provides the steel and welding rods for the grills. The company sets the schedule of work to be done and Simpson is expected to follow the schedule. He sends a bill every month for the amount of square feet of grills completed. I. Would you classify Mr. Simpson's employment as a contract of service or a contract for services? Give reasons for your answer and state whether Mr. Simpson should be paid gross or net of taxes. (10 Marks)