Joe Wrote a Will in 1994 When He Was Age

Joe wrote a will in 1994 when he was age 65.The only two provisions are that his older son will receive his 1984 Cadillac and that the remainder of his estate be divided one-third to his older son and two-thirds to his younger son.When Joe is 72 he quits driving and sells his car.Joe dies 10 years after executing the will without changing it.How will Joe's estate be divided?

A) The older son will get one-third and the younger son will get two-thirds of the estate.
B) The older son will receive an amount equal to the value of the Cadillac in 1994; the remainder will go one-third to the older son and two-thirds to the younger son.
C) The older son will receive an amount equal to the value of a 1984 Cadillac at the time of Joe's death,the remainder will go one-third to the older son and two-thirds to the younger son.
D) If the proceeds from the sale of the Cadillac can be separately traced,the older son will receive these,and the remainder will go one-third to the older son and two-thirds to the younger son; if the proceeds cannot be separately traced,the entire estate will go one-third to the older son and two-thirds to the younger son.