Ellen and Kippen were discussing that Ellen was ready to sell her computer console and video games. Ellen said she wanted $$750.$ Kippen said that was a good price, and Ellen said she would send her an email confirming their conversation. Later that night, Ellen sent Kippen an email offer to sell the computer console and video games; however, she accidentally typed $$570$ instead of $$750.$ Kippen replied, $$I$$ll take it for $$570.$ Is this a valid contract?

Yes, since Kippen agreed to the offer

No$,$ since this is a case of mutual mistake

No$,$ since this is a case of an innocent misrepresentation

No$,$ since Kippen knew or had reason to know of Ellen$$s mistake

No$,$ since this case involves duress