Frank, an accountant, says to Missy, ” I’ll sell you my laptop for 100$’. Missy asks. ‘ will you give me until tomorrow to make up my mind?” ‘ sure,’ Frank replies. Which of the following is true?a, Frank cannot revoke his offer, no matter whatb, Frank cannot revoke his offer, but only if Missy pays him to keep the offer open until tomorrowc, Frank cannot revoke his offer, no matter what, because he is not a merchantd, Frank cannot revoke his offer, no matter what, because he did not promise Missy anything in writting.