ACD保存液保存21天的全血，血浆钾可达到（）

A.14mmol／L

B.17mmol/L

C.29mmol／L

D.35mmol／L

E.40mmol/L

Last week, Beauty offered to buy Allan’s computer at $3,000 for the purpose of writing a thesis. However, Beauty subsequently agreed to increase the purchase price to $5,000 after Allan told her that the computer could also be used for playing movies, and this became one of the contractual terms between the parties in the contract of sale.Beauty paid $5,000 to Allan, received the computer from Allan and completed the thesis by making use of the computer. However, she could not play movies with the computer.Required:In relation to contract law, advise Beauty as to her rights under the contract. (10 marks)