A client is admitted with an exacerbation of heart failure secondary to chronic obstructive pulmonary disease (COPD). Which observation(s) by the nurse require immediate intervention to reduce the likelihood of harm to this client? Select all that apply.

A. A full pitcher of water is concerning as excessive fluid intake can exacerbate heart failure by causing fluid overload, leading to worsening edema and respiratory distress. B. A saline lock is appropriate for maintaining venous access and does not pose immediate harm to the client. C. A low sodium diet tray is appropriate for managing heart failure and is beneficial for this client. D. A bedside commode positioned near the bed can facilitate safe toileting and is not harmful. E. Lying in a supine position can increase venous return and exacerbate heart failure symptoms; the client may require a more elevated position to ease breathing and reduce cardiac workload.