9. 某機器設備定價$1,000,000,購入時現金折扣為$50,000,支付運費$40,000,安裝費$80,000,搬運不 慎發生損壞而付出修理費$20,000,則該機器設備之帳面成本應為: (A)$1,000,000 (B)$1,050,000 (C)$1,070,000 (D)$1,090,000