Which patient would be at greatest risk for the potential development of hypermagnesemia? a. 83-year-old man with lung cancer and hypertension b. 65-year-old woman with hypertension taking...

Which patient would be at greatest risk for the potential development of hypermagnesemia?

a. 83-year-old man with lung cancer and hypertension

b. 65-year-old woman with hypertension taking β-adrenergic blockers

c. 42-year-old woman with systemic lupus erythematosus and renal failure

d. 50-year-old man with benign prostatic hyperplasia and a urinary tract infection