Study the following information carefully and answer the given questions:Six persons A, B, C, D, E and F took up a job with a firm in a week from Monday to Saturday. Each of them joined for different posts on different days. The posts were of -- Clerk, Officer, Technician, Manager, Supervisor and Sales Executive, though not respectively.F joined as a Manager on the first day. B joined as a Supervisor but neither on Wednesday nor Friday. D joined as a Technician on Thursday. Officer joined the firm on Wednesday. E joined as clerk on Tuesday. A joined as a Sales Executive.On which of the following days did the Sales Executive join?