Which of the following correctly states the holding of the court in Laba v. Carey? Question 1 options: a) Since the seller could not deliver marketable title, the buyers should be entitled to return of their deposit and other related costs. b) Since the City of New York could in the future require that the sidewalk level be raised, this possibility makes title unmarketable. c) The requirement that marketable title be delivered cannot be changed by contract. d) Since the buyers agreed to take title subject to the covenant regarding the grading of the sidewalk, the covenant should not factor into an assessment of whether title is marketable