标准化是指，在经济、技术、科学及管理等社会实践中，对事物和概念通过制订、发布和实施标准达到统一，以获最佳秩序和社会效益。

A client with newly diagnosed type 1 diabetes mellitus is learning about diabetic foot care. Which of the following statements by the client indicates further instruction is needed（）

A. "I should use lotions. "

B. "I should use antiperspirants. "

C. "I should use foot soaks. "

D. "I should use nail files. "