A nurse is reviewing laboratory values and vital signs for a patient with congestive heart failure. Which of the following associations will be correct for the nurse to make? a) In heart failure, blood pressure increases, so aldosterone levels will be low. b) Angiotensin levels will be low due to increased kidney perfusion. c) rain natriuretic peptide (BNP) will be increased due to blood volume overload. d) Blood pressure will be elevated, while heart rate is lower than normal.