C&A uses a machine to make one table top and four legs to assemble into a table. The machine takes 5 minutes to set up for the tops and 5 minutes to switch from tops to legs. Each top takes 1 minute to make. Each leg takes 0.5 minutes to make. The assembly step combines the top with four legs into one table every 4 minutes. Assume there is sufficient demand for every table made. Considering one table as a flow unit, what is the ideal batch size of table tops?