Alpine Corporation is a qualified small business corporation eligible to elect S corporation status. Albert is a shareholder in Alpine. On February 1 of the current year, Albert dies before signing the proper S corporation election form. The stock passes to Albert’s estate. Ellen is appointed executor of Albert’s estate on May 1 of the current year. On March 10 of the current year, Alpine filed Form 2553, the election form to be an S corporation, properly signed by all March 10 shareholders, and Ellen (the executrix) on behalf of Albert. Is this a valid S corporation election? Prepare (in good form) a research memorandum to the file.