Stirrup, a rancher, and Equinox, a fancier of horses, signed the following writing: "For $5,000, Stirrup will sell to Equinox a gray horse that Equinox may choose from among the grays on Stirrup's ranch." Equinox refused to accept delivery of a gray horse timely tendered by Stirrup or to choose among those remaining, on the ground that during their negotiations Stirrup had orally agreed to include a saddle, worth $100, and also to give Equinox the option to choose a gray or a brown horse. Equinox insisted on one of Stirrup's brown horses, but Stirrup refused to part with any of his browns or with the saddle as demanded by Equinox. If Equinox sues Stirrup for damages and seeks to introduce evidence of the alleged oral agreement, the court probably will 
admit the evidence as to both the saddle and the option to choose a brown horse. admit the evidence as to the saddle but not the option to choose a brown horse. admit the evidence as to the option to choose a brown horse but not the promise to include the saddle. not admit any of the evidence.