Draw a physical DFD to model this vet practice scenario. Hallam Vets consists of two vets plus a receptionist. Both vets maintain records of treatment sessions. In addition, they maintain detailed animal records held in reception. When an owner arrives with an animal, the receptionist enters new animal details if the animal has not been seen before. The receptionist also reminds owners if their account needs paying, and receives payments where offered. She records details of payments. Patients may send payments by cheque in the mail, or pay by cheque or cash at reception. Payments are banked daily. Once a week the receptionist checks the payments. She updates the ledgers and records the updated balance on the owner’s records. She sends reminders to owners with outstanding balances. Once a year, a breakdown of treatment has to be prepared by each vet and despatched to the Department of Animal Welfare.