Popov despised lawyers and refused to have one prepare his will. Instead he went online, got information about estate planning, and wrote a will in his own handwriting in which he left his entire estate to his brother and $1 to each of his three children. The will was not witnessed by anyone. After his death, his children challenged its legality and validity. a. Are witnesses always necessary for a handwritten will to be valid? b. Is this an example of a holographic will? c. Will the validity of the will be rejected by the court because it was not prepared by an attorney?