Jimmy Yang is a customer care executive at an e-commerce site. He receives a complaint from an elderly customer regarding an incorrect product that was delivered to him, but is irritated that the elderly customer does not understand the product he ordered. Which strategy below should Jimmy Yang utilize?

A. Treat the customer as if he or she is confused or disoriented
B. Try to sound patronizing while addressing the customer's grievances.
C. Adopt a flippant approach if the customer is a bit arrogant, disoriented, or disrespectful.
D. Be careful not to let biases about older people interfere with good service.