ClearLab is a cosmetic company that reaches out to its customer with little or no experience. The company has a staff of beauticians to help customers select the right cosmetic products, show them which cosmetic is appropriate for each customer and provide 24/7 support. The company is working on an online system to manage its growing business. a) Suggest FOUR (4) data validation rules that might help reduce input errors for a data entry screen for entering new members. (4 marks)