【分析解答题】

In January 2011Department Store entered into a sales contract withApplianceCo to buy 100 refrigerators from the latter at a price of RM

B、3,000 yuan/piece, total price being RM
B、300,000 yuan. The payment would be made in two instalments: 100,000 yuan as advance payment to be paid after the conclusion of the contract, and the remaining 200,000 yuan to be paid inApril 2011. Upon receiving the advance paymentApplianceCo would deliver all the products.After the conclusion of the sales contract,Department Store made the first payment of 100,000 yuan and received all the products delivered byApplianceCo.In the same month,ApplianceCo intended to rent a space of 100 m2 fromDepartment Store to exhibit its other appliance products. For this purpose the two parties entered into a rental agreement and agreed upon the following terms and conditions: the term of rental would be one year as from January toDecember 2011; the total rental would be RM
B、400,000 yuan and be paid RM
B、100,000 yuan quarterly within the first 10 days of January,April, July and October.At the end of March 2011ApplianceCo sentDepartment Store a written notice, stating that it would set off its rental of RM
B、200,000 yuan for the second and third instalments with the remaining price of 200,000 yuan for the refrigerators.Required:Answer the following questions in accordance with the relevant provisions of theContract Law, and give your reasons for your answer: (b) state the conditions to be met byApplianceCo when it was claiming the set-off of credit and debt withDepartment Store. (6 marks)