商务信函的常见错误辨析 — 国际贸易选择题

某业务员起草一封英文商务信函，其中出现以下四处做法：(1) 信内地址（Inside Address）只写收信公司名称，未写门牌号、街道、城市等；(2) 正文第一句写道：We have received with thanks your letter of May 5 and we want to tell you that we are now in a position to offer you the goods you asked about in your said letter；(3) 将结尾敬语 Yours faithfully 写在签名之后；(4) 省略事由行（Subject Line）导致正文主题不明确。以上做法中，属于违反简洁（Conciseness）写作原则的是：A. (1) B. (2) C. (3) D. (4)