一份单据的部分内容，请从各题给出的答案选项中选出可以填入空白处最合适的答案,类似于完形填空。 China National Cereals,Oils & Foodstuffs Import and Export Corparation,Shenzhen Branch,hereinafter called the【A1】 ,agree to sell and China Native Products INC,Los Angels,California,【A2】,hereinafter called the Buyers,agree to buy the under-mentioned goods subject to the terms and conditions stipulated【A3】: 1．Name of Commodity &Specifications:ZHONG HUA BRAND Salted Cucumber50 tins*200 grams 2．Quantity and Weight:100 Cartons/1000kg 3．【A4】price:C & F C3% Los Angeles or San Francisco US$20.00 Per carton 4．Amount:US$2000.00 5．Time of Shipment:During Oct./Nov.,2009 6．【A5】:In Cartons 7．Marks & No.:ZHONG HUA BRAND Salted Cucumber No.1-100 8．Loading【A6】and Destination:From Shenzhen,China to Los Angeles Or San Francisco 9．Insurance:To be【A7】by the Buyers 10．Terms of Payment:To be made against sight draft drawn under an irrevocable【A8】,for the total value of goods in US$2000.00,【A9】10% more or less both in amount and quantity at Sellers' s option,established through a bank which is mutually agreed by the two sides. 11．Inspection:Certificate of quality & weight and phytosanitary certificate【A10】by China Entry & Exit Inspection and Quarantine authorities shall beprovided to the Buyers.The quality and weight certified in the certificates are to be taken as final. 【A1】 A.Buyers B.Importers C.Sellers D.Shippers