单选题 Customers may also be permitted to ______ their current accounts for a short period in anticipation of a credit item coming in.

【正确答案】 B
【答案解析】[解析] A项overextend意为“货款过多”;B项overdraw意为“透支”,C项over- value意为“估价过高”;D项overpay意为“多付款”。