下图是今年春节联欢晚会上的舞蹈《飞天》剧照，七年级一班的唐杰一家在观看此节目时，发出了以下议论，其中存在错误的是  [ ]

A、妈妈：她们把敦煌壁画中的飞天形象演活了，真是美轮美奂

B、爸爸：敦煌莫高窟堪称世界最大的艺术宝库之一，内有大量精美的壁画和雕塑

C、唐杰：莫高窟的大部分洞窟是隋唐时期开凿的

D、叔叔：我到陕西西部旅游时参观过敦煌莫高窟

On 1 June 2009, Shoes Galore received brochures from Rubbersoles, the local distributor of the ‘Adeedust’ brand of sports shoes, advertising the latest limited edition of Adeedust shoes for sale at $50 per pair. Shoes Galore wanted to get their hands on the limited edition shoes, so they quickly sent an e-mail to Rubbersoles stating, ‘we are glad to place an order for 100 pairs, on 30-day credit terms.’On 2 June 2009, Rubbersoles replied by e-mail that they could deliver 100 pairs, cash on delivery. On 3 June 2009, Shoes Galore sent out a letter informing Rubbersoles that they were agreeable to paying cash on delivery of the Adeedust shoes. This letter reached Rubbersoles on 5 June 2009.On 4 June 2009 Rubbersoles e-mailed Shoes Galore stating that they were no longer in a position to deliver the Adeedust shoes as they had run out of stock (inventory) due to overwhelming demand.Required:Discuss whether there is a binding contract between Rubbersoles and Shoes Galore. (10 marks)