交易条件修改的表达方式 — 国际贸易选择题

买方收到卖方实盘后，拟将原发盘中规定的价格条款由「CIF 伦敦」改为「FOB 上海」。下列哪一句最恰当地表达了这一交易条件的修改？ A. We accept your offer with all terms unchanged. B. We regret to inform you that we must decline your offer entirely. C. While we find your offer acceptable, we would like to amend the price term from CIF London to FOB Shanghai. D. We will place our order at CIF London as quoted in your offer.