An older person is admitted to the hospital with an exacerbation of congestive heart failure. The nurse notes that the patient complains of severe itching at night and has a red rash on her torso. The patient is diagnosed with scabies. The patient asks the nurse, "How did I get something like this?" The best response by the nurse is:

A. While scabies can occur in individuals with chronic illnesses, it is not limited to this population and can affect people of all ages. B. Scabies is highly contagious and spreads through close physical contact, such as skin-to-skin contact or sharing bedding and clothing, making this the best and most accurate response. C. There is no direct link between medications and increased susceptibility to scabies, although immunosuppression may play a role in severe cases. D. Age-related skin changes do not directly cause scabies; the condition is due to infestation with the Sarcoptes scabiei mite.