40, answer asap

Question 40 2 pts Abigail contracts to sell her RV to Isaac. Isaac builds a structure behind his house in which to keep the RV. Abigail's later attempt to cancel the contract Ti Att is 1 On- Effective because Abigail wants to sell the RV to someone else. Effective because Abigail did not ask Isaac to build anything. O Not effective because Isaac may not be able to obtain a similar RV for a O Not effective because Isaac has detrimentally relied on Abigail's offer