A. Incorrect: Deep vein thrombosis (DVT) is not a known complication of isoniazid.

A. Incorrect: Achilles tendon rupture is not a complication of trimethoprim-sulfamethoxazole. B. Incorrect: Abstinence syndrome (withdrawal symptoms) occurs with opioid dependence, not antibiotics. C. Incorrect: Hypokalemia is not associated with this medication. D. Correct: Trimethoprim can cause hyperkalemia by decreasing potassium excretion, especially in older adults or those with kidney disease.