单选题 In general, the______amount that a student spends for housing should be held to one-fifth of the total for living expenses.
A. acceptable B. advisable C. available D. applicable

【正确答案】 B
【答案解析】[解析] acceptable意为“可接受的”；advisable意为“可取的，明智的”；available意为 “可取的，适当的，贤明的”；applicable意为“能应用的，合适的，适用的”。