单选题 The nurse is developing a teaching plan for a client diagnosed with diabetes insipidus. The nurse should include information about which hormone, commonly lacking in clients with diabetes insipidus ？（）

A、 Antidiuretic hormone (ADH).
B、 Thyroid-stimulating hormone (TSH).
C、 Follicle-stimulating hormone (FSH).
D、 Luteinizing hormone (LH).

【正确答案】 A

【答案解析】ADH is the hormone lacking in diabetes insipidus. The client's TSH, FSH, and LH levels won't be affected.