In Australia, a job description is being developed for a position that is going to be advertised for a job as a salesperson in a car yard. The team developing the description and advertisement argue that the person who fulfils the position should be a male. They say this is because men know more about cars and customers would not trust a female salesperson. If they specified that the person for the job needs to be a male in a job description or advertisement, are they contravening legislative requirements? How would I explain.