This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which of the following is NOT an adverse effect of excessive mineralocorticoid action ? \nSelect and explain. \nA. Na+   and water retention, B. Acidosis, C. Aggravation of CHF associated myocardial fibrosis, D. Rise in blood pressure', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]