Business law Australia

Tammy owns a company which manufactures confectionary. After tasting a sample of Kim's dark chocolate, Tammy enters into a contract with Kim pursuant to which Tammy agrees to purchase 1000 kilograms of high grade dark chocolate. Kim supplies chocolate to several other confectionary manufacturers. Kim sources his raw products from North Korea. Assume that it is illegal in Australia to import goods from North Korea or sell goods of North Korean origin. Prior to entering the contract, Kim tells Tammy that his chocolate is the best chocolate in Australia. He also tells Tammy that he has a large supply of dark chocolate on hand. In fact, most of Kim's chocolate is low grade milk chocolate, not high grade dark chocolate, and he has none of it in inventory. When Kim delivers the chocolate to Tammy, Tammy is disappointed. Instead of delivering dark chocolate, he delivers white chocolate. Tammy cannot use white chocolate in her manufacturing process. Further, she is unhappy with the quality of Kim's product. What grounds can Tammy use to justify terminating the contract with Kim: Choose the SINGLE answer that best answers the question or best completes the sentence. Do NOT select multiple answers (ie, please IGNORE the instructions below where it says to choose "at least one" correct answer -- this is a computer bug that I cannot get rid of).Breach of the warranty that the chocolate be fit for purpose; B Termination due to mutual mistake; C Termination due to Illegality; D Failure to perform: E a., b. and c. are correct; F All of the above