[单选题]根据合同中的付款条款规定，贵方所欠货款23000美元在2013年2月10日已到期。

A.According to the payment terms in your contract, the sum of USD23,000 should have been made at 10 February 2013.
B.According to the payment terms in our contract, the sum of USD23,000 should have been made by 10 February 2013.
C.According to the payment terms in your contract, the sum of USD23,000 should have been made on 10 February 2013.
D.According to the payment terms in our contract, the sum of USD23,000 should have been made in 10 February 2013.