On Monday Troy Agrees to Sell His Computer to Kim

Multiple Choice

On Monday Troy agrees to sell his computer to Kim for $2,000 if she accepts by noon on Wednesday. On Tuesday Kim phones Troy and says, "I'll give you $1,500 for it." Troy says no. On Wednesday at 11:00 a.m. Kim phones and says, "Okay, I'll take your computer for $2,000." Troy says, "Sorry, I just sold it to Natasha." Which of the following statements is TRUE?

A) The offer was open until Wednesday at noon so Troy can be successfully sued by Kim
B) The response "I'll give you $1,500 for it." cancelled Troy's offer
C) Natasha can be sued by Kim to recover the computer
D) Both A and C
E) None of the above