When Information Is Reported by the Patient,it Is Considered to Be

When information is reported by the patient,it is considered to be subjective data.Which of the following statements is considered to be objective data?

A) The patient tells the nurse,"I have pain in my lower back."
B) Mr.Williams tells the nurse he is having trouble catching his breath.
C) Miss Sims has told the doctor she has no history of allergies to antibiotics.
D) The patient's skin is warm and dry.