Lonnie and Pamela have been negotiating a contract over the phone for the sale and purchase of Lonnie's property. Pamela believes that they have a contract due to all of Lonnie's assertions and begins to clear the trees and brush on the land. If Lonnie tries to claim that there is no contract because all the assertions were oral, Pamela could use which of the following exceptions to the statute of frauds writing requirement to prove that there is in fact a contract? Complete performance Partial performance Evidentiary substantiation Parol evidence Substantial performance